20 Best Ecommerce Klaviyo Email Marketing Agencies in 2026, Ranked

Written by a team that built a 100+ client marketing agency, watched bad email strategy drag every other channel down with it, and built Threadpoint to fix it.

Every "best Klaviyo agency" list you've read was written by an agency ranking themselves #1. We're not going to pretend otherwise. Threadpoint is #1 on this list too. The difference? We'll tell you exactly why, show you the math, and then give you an honest breakdown of 19 other agencies so you can make the right call for your business.

Because here's what most of these guides won't say: the "best" agency depends entirely on your business stage, your margins, and what you actually need email to do for your P&L. Not your Klaviyo dashboard. Your P&L.

We evaluated 20 ecommerce Klaviyo email marketing agencies across the factors that actually matter: whether they move profit, not just platform-attributed revenue. Below, you'll find a comparison table, detailed profiles with honest pros and cons, pricing transparency, a decision framework, and red flags to watch for.

Use the links below to jump to any section.

Table of Contents

• How We Evaluated These Agencies
• Quick Comparison Table
• Agency Profiles (1-20)
  • 1. Threadpoint
  • 2. Hustler Marketing
  • 3. Flowium
  • 4. One10 Media
  • 5. Chronos Agency
  • 6. Underground Ecom
  • 7. Lilo Social
  • 8. Retention Commerce
  • 9. Andzen
  • 10. Dido Agency
  • 11. Fuel Made
  • 12. SmartMail
  • 13. InboxArmy
  • 14. MH Digital
  • 15. Tinuiti
  • 16. Power Digital
  • 17. Alchemy Worx
  • 18. & BAM
  • 19. Sticky Digital
  • 20. Get Better
• How to Choose the Right Agency for Your Brand
• Red Flags That Should Kill a Deal
• Frequently Asked Questions
• Sources

How We Evaluated These Agencies

Most "best agency" lists evaluate surface-level signals: website design, Clutch ratings, how many blog posts they publish. We took a different approach because we've operated on both sides of the table.

Before Threadpoint, our team built and ran Digital Position, a 100+ client digital marketing agency spanning PPC, SEO, social, and web. We saw firsthand what happens when the bottom-funnel email strategy is broken: acquisition costs spike, payback windows stretch, and channels that should be profitable stop working. We've lived the downstream consequences of bad email strategy, and that experience shapes how we evaluate agencies.

Here's what we weighted:

1. P&L Impact vs. Platform Revenue

Does the agency measure success by Klaviyo-attributed revenue, or by what actually hits the business's bottom line? Most agencies optimize for platform metrics because it makes their reports look good. The best agencies optimize for contribution margin, second-purchase rate, and customer lifetime value.

2. Discount Dependency

What percentage of email revenue comes from discount-driven sends? This is the metric nobody talks about. If 60-70% of an agency's "email revenue" is powered by coupons, they're not growing your business. They're training your customers to wait for sales.

3. Strategic Depth

Does the agency start with your financials or your flows? There's a massive difference between an agency that builds pretty emails and one that understands your unit economics, your CAC, your MER, and works backward from there.

4. Team Structure and Client Load

How many clients per account manager? Is the person on your calls making strategy decisions, or reading from a playbook someone else wrote? Large agencies with junior-heavy teams deliver volume, not insight.

5. Klaviyo Partnership Tier

This matters more than most brands realize. Higher-tier partners get direct access to Klaviyo's product and engineering teams, early access to features, and dedicated support channels. That access translates directly into better execution for clients.

6. Pricing Transparency

Agencies that hide pricing are usually hiding something else too. We included pricing ranges for every agency on this list where publicly available.

7. Honest Fit

Not every agency is right for every brand. A $2M DTC brand and a $200M heritage brand need fundamentally different things. We evaluated who each agency is actually best for, not who they claim to serve.

Quick Comparison Table

Agency Profiles

1. Threadpoint

Website: threadpoint.agency
Founded: By the team behind Digital Position (100+ client marketing agency)
HQ: United States
Team Size: 13 senior specialists (no junior talent)
Klaviyo Tier: Master Platinum Partner
Pricing: $3,000/mo (consulting only) to $20,000/mo (large brand full-service)
Best For: Ecommerce brands that want bottom-funnel strategy tied to actual business profit, not email-attributed revenue

Why Threadpoint Is #1

We're going to be direct about this: Threadpoint isn't just an email agency. It's a bottom-funnel agency built specifically to lower acquisition costs through retention strategy. That distinction matters more than most brands realize.

The team behind Threadpoint built and ran Digital Position, a 100+ client digital marketing agency that managed PPC, SEO, social media, and web development. That experience gave us something no other email agency has: a front-row seat to what happens when bad email strategy drags down every other channel. We watched brands pour money into Meta and Google while their retention program trained customers to wait for discounts, inflated acquisition costs, and destroyed margins.

So we built Threadpoint as a group of industry veterans who chose to focus on the highest-impact, most underserved channel in ecommerce. Not because email was easy. Because it was broken.

What Makes Threadpoint Different

Strategy starts with your financials, not your flows. Before we touch a single automation, we diagnose your unit economics: CAC, MER, contribution margin, second-purchase rate, 60-day LTV by channel. Most agencies start with a flow audit. We start with a P&L diagnostic because we need to know where the margin actually lives before we can go get it.

We measure what matters. While most agencies report Klaviyo-attributed revenue, we track first-time conversion rate, purchase frequency, return purchase rate, second-order rate, and lifetime value. Platform revenue is a vanity metric when 60-70% of it is driven by discounts.

We break the discount cycle. Most ecommerce brands don't realize the trap they're in. Their agency drives short-term spikes with discounts that inflate platform revenue but destroy margins. The brand doesn't see P&L impact. Trust erodes. They pull it in-house, repeat the same templates, and the cycle continues. We call this the Cycle of Death, and dismantling it is our core expertise.

We openly work alongside your in-house team. Most agencies see in-house teams as a threat. We see them as leverage. A skilled in-house person can execute daily sends. What they usually can't build is the full strategic and technical layer: segmentation architecture, flow strategy, DMARC/DKIM/SPF, deliverability, cross-sell sequencing, second-purchase acceleration, and staying current on every new Klaviyo feature. That gap is where the money lives, and we fill it while your person keeps running day-to-day operations.

Klaviyo recommends us. Threadpoint has a dedicated Slack channel with over 50 Klaviyo reps and direct access to Klaviyo leadership. When Klaviyo's own team is asked which agency to recommend, we're the name that comes up. That's not marketing. That's earned trust from the platform itself.

We cap our clients. With a team of 13 senior specialists and zero junior talent, we intentionally limit how many brands we take on. Every client gets experienced strategists, not account managers reading from scripts. This is a deliberate choice: we'd rather do exceptional work for fewer brands than adequate work for many.

Case Studies

Limitless Walls: Email revenue was almost entirely discount-driven. But the real purchase barrier wasn't price. Wall murals are a daunting home project, and customers were anxious about committing. We shifted the entire Klaviyo strategy to address that single fear: free samples. No discount required. Result: +$70K contribution margin in 2 months, +27% business revenue, +29% MER, +30% new customer revenue. Limitless Walls increased ad spend 31% because the email strategy unlocked their ability to scale acquisition.

BrickHouse Nutrition: We A/B tested replacing polished, designed newsletters with plain-text emails from the founder, then layered in dynamic product recommendations based on each customer's health goals. Personalization that actually meant something. Average newsletter revenue went from $19,065 to $31,267: a 64% revenue lift from a single test.

Dooney & Bourke: Managed email and SMS across multiple brands, including a Listrak-to-Klaviyo migration. Results: average 11% MER increase, 5% more margin on every purchase, and 34% revenue growth. Sent 66 emails and 34 SMS in a single month across their brands. When the client's VP messaged "thanks for running point and having our back," that's the kind of relationship we build.

What to Know Before You Reach Out

• Threadpoint is not the cheapest option on this list. If you're looking for a $2K/month email template service, we're not the fit.
• We're selective about who we take on. If your brand isn't ready for strategic retention work, we'll tell you that upfront.
• If you have an in-house email person and want to keep them, great. That's actually our preferred setup.
• Two engagement models: Flows Only (we build automations, you run campaigns) or Full-Service (we own the entire channel).
• Communication happens in Slack, not buried in email threads.

Get a Free Financial Diagnostic from Threadpoint

2. Hustler Marketing

Website: hustlermarketing.com
HQ: South Africa (global client base)
Klaviyo Tier: Elite Partner
Team Size: Manages 80+ clients, 2-3 per Account Manager
Pricing: $3,000-$10,000/mo
Best For: DTC brands that want bold, unconventional email creative that stands out in crowded inboxes

Overview

Hustler Marketing has built a reputation on creative that doesn't look like typical ecommerce email. Their campaigns are bold, personality-driven, and designed to stop the scroll in an inbox full of generic product grids. They're a Klaviyo Elite Partner and one of only 12 agencies on the Yotpo Email Advisory Board globally.

Strengths

• Low client-to-AM ratio: 2-3 clients per Account Manager is among the best in the industry. Your strategist actually knows your brand.
• Creative differentiation: Their emails look different from everyone else's. In a world of template fatigue, that matters.
• Proven results: BlendJet generates nearly $1M/month in email revenue from a strategy Hustler built from scratch. Ranger Point Precision saw a 32% revenue increase in 3 months.
• Yotpo integration: Premier Yotpo Partner with deep reviews and loyalty integration.

What to Watch For

• South Africa-based team means time zone gaps with US brands. Async communication works for most, but if you need same-day turnarounds during US business hours, confirm their availability.
• Strong creative focus, but less public emphasis on the financial/P&L side of retention strategy. If you need someone to audit your unit economics before touching Klaviyo, that may not be their starting point.
• $100M+ generated for clients in 2023 alone is impressive, though like most agencies, the headline number is platform-attributed revenue rather than incremental business revenue.

3. Flowium

Website: flowium.com
HQ: Staten Island, New York
Klaviyo Tier: Master Elite Partner
Team Size: 50-249 (6-member dedicated teams per client)
Pricing: $2,000-$5,000/mo
Best For: Shopify brands that need sophisticated Klaviyo automation built by deep platform experts

Overview

Flowium is one of the most recognized names in the Klaviyo agency ecosystem. Founded in 2017, they hold Klaviyo's highest partnership tier (Master Elite) and were named to the Inc. 5000 in 2025. Their hands-off model means clients approve campaigns while Flowium handles everything else, including strategy, copy, design, and technical implementation.

Strengths

• Automation depth: Flowium's flow architecture is among the most sophisticated in the space. If your automations are leaving revenue on the table, they'll find it.
• Dedicated teams: 6-member teams per client ensures continuity and specialization.
• Proven scale: RSVLTS achieved 72% of total revenue from email. A health supplement company saw a 482% surge in email revenue.
• Competitive pricing: Starting at $2K/month makes them accessible for growing brands.
• Perfect Clutch rating: 5.0/5 with 86 reviews and 100% on-time delivery rate.

What to Watch For

• Flowium's strength is technical execution and automation. If you need someone to challenge your business model, audit your margins, or rethink your discount strategy at the P&L level, that's a different conversation than flow optimization.
• With 50-249 employees and a growing client base, ask about current client load and who specifically will be on your account.
• Their headline case study metrics (72% of revenue from email) are impressive but worth understanding in context. A high email-attributed revenue percentage isn't always a good thing if it's driven by heavy discounting.

4. One10 Media

Website: one10media.com
HQ: Medina, Ohio
Klaviyo Tier: Platinum Master Partner
Team Size: 5-10 specialists
Pricing: Custom
Best For: DTC brands that want a boutique partner with senior-level attention and strong ROI documentation

Overview

One10 Media is a tight-knit boutique agency founded in 2018 that punches well above its weight class. They're a Klaviyo Platinum Master Partner with a 4.9/5 Clutch rating and a perfect 5.0 "Willing to Refer" score, which means their clients would stake their own reputations on recommending them. They also hold Meta Business Partner and ActiveCampaign Partner certifications.

Strengths

• Exceptional ROI documentation: HECS Hunting achieved 955% ROI with 219% YoY email revenue increase. Bluu generated 2,951% ROI in 5 months, going from $0 to $368K in email revenue.
• Boutique attention: With 5-10 people, you're working with senior strategists on every call.
• Multi-platform capability: Email, SMS, plus paid social through Meta and Google. They understand retention within the broader acquisition ecosystem.
• No long-term contracts: They don't lock clients in because they don't need to. Results keep clients around.

What to Watch For

• Small team means limited capacity. If they're full, you're waiting.
• Pricing isn't published, which makes comparison harder. Ask for clear deliverable breakdowns during the sales process.
• Their strength is DTC brands. Enterprise or multi-brand operations may need more infrastructure.

5. Chronos Agency

Website: chronos.agency
HQ: Singapore and New York
Klaviyo Tier: Elite Master Partner
Team Size: 80+ retention specialists
Pricing: $3,000-$12,000/mo
Best For: Scaling DTC brands that need email, SMS, and push notifications managed as a unified lifecycle engine

Overview

Chronos Agency holds the highest Klaviyo partnership tier and has generated over $329 million through email, SMS, and push for their clients. They won the Clutch Global Award for email marketing excellence in 2024 and operate across Singapore and New York, serving DTC brands globally.

Strengths

• Multi-channel lifecycle: Unlike agencies that bolt on SMS as an afterthought, Chronos builds email, SMS, and push as one integrated strategy from day one.
• Scale with credibility: $329M+ generated and 3,500% average ROI claimed across their portfolio.
• International reach: Strong in both US and APAC markets, which matters for brands selling globally.
• DTC specialization: Clients include The Oodie, Truly Beauty, and Beam Suntory.

What to Watch For

• 80+ employees serving a large client base. The risk with any agency at this scale is whether the senior strategist you meet in the pitch is the person who manages your account day-to-day.
• Singapore HQ means APAC working hours for core leadership. Their NY office mitigates this, but confirm which team will be on your account.
• Strong execution agency, but the strategic approach appears more focused on lifecycle optimization than on challenging your discount dependency or auditing your P&L.

6. Underground Ecom

Website: undergroundecom.com
HQ: US and UK
Klaviyo Tier: Master Elite Partner
Team Size: 150+ specialists managing 400+ accounts
Pricing: Custom
Best For: Large-scale ecommerce brands (8, 9, and 10-figure) that need enterprise-grade Klaviyo management

Overview

Underground Ecom won Klaviyo's Partner of the Year award in 2025 (EMEA), the industry's highest recognition. They work with some of the biggest names in DTC and consumer brands globally, managing 400+ accounts across their US and UK offices.

Strengths

• Klaviyo Partner of the Year 2025: This isn't a self-awarded title. Klaviyo picked them.
• Enterprise brand roster: Virgin Experiences, Huda Beauty, Surreal, Osprey, Oh Polly, and Chilly's.
• Scale: 150+ specialists means they can handle complex, multi-market operations.
• End-to-end Klaviyo management: Strategy, content, split testing, technical support, and reporting all in-house.

What to Watch For

• 400+ accounts across 150 people is roughly 2.5-3 accounts per person, which is manageable but ask specifically about your account team's current load.
• Enterprise-focused positioning means their processes and pricing may not suit brands under $5-10M in revenue.
• Limited public case study data with specific ROI numbers. The Partner of the Year award is strong credibility, but ask for detailed results relevant to your vertical during the sales process.

7. Lilo Social

Website: lilosocial.com
HQ: Brooklyn, New York / Jackson, Wyoming
Klaviyo Tier: Master Elite Partner
Team Size: 50+ (serves 550+ DTC brands)
Pricing: $450-$500/email or $4,000-$7,000/mo packages
Best For: DTC brands that want paid media and email managed under one roof with a unified strategy

Overview

Lilo Social (formerly Tequila Sunrise) is a full-funnel ecommerce agency covering paid search, paid social, creative, landing pages, and email/SMS. They hold Klaviyo's Master Elite partnership, have been on the Inc. 5000 list three times, and maintain a 90% client retention rate.

Strengths

• Full-funnel integration: Having paid acquisition and email retention under one roof eliminates the blame game between agencies and creates unified strategy.
• Inc. 5000 three times: Consistent growth over multiple years, not a one-hit wonder.
• Per-email pricing option: $450-$500 per email gives smaller brands flexibility without committing to large retainers.
• Strong client base: Obvi, Schoolyard Snacks, Fat Snax among their notable clients.

What to Watch For

• 550+ DTC brands is a massive client base. At that volume, process standardization is how you scale, which means your strategy may follow a playbook rather than being built from scratch for your business.
• Full-funnel means email is one of several services, not the sole focus. If you need deep, specialized retention strategy, a pure-play email agency may go deeper.
• Claims of 963% average email revenue growth and 18x return after one year are aggressive. Ask for case studies specific to your industry and revenue range during diligence.

8. Retention Commerce

Website: retentioncommerce.com
HQ: Los Angeles, California
Klaviyo Tier: Partner
Team Size: 11-50
Pricing: $3,000-$5,000/mo
Best For: Shopify brands that need retention marketing automation plus loyalty program integration

Overview

Retention Commerce has been in the space since 2015, making them one of the more experienced shops on this list. Based in LA, they specialize in helping Shopify retailers build loyalty programs, chatbot/messenger marketing, retargeting, and email automation. Founder Joseph Hsieh is known for producing substantial free educational content and actively contributing advice in industry forums.

Strengths

• Retention tech stack: Beyond just email, they integrate loyalty programs, chatbots, and retargeting into a unified retention strategy.
• Shopify depth: Deep platform expertise specifically for Shopify stores.
• Flexible engagement: Month-to-month managed services plus fixed-price project options.
• 11 years in business: Longevity in an industry where agencies come and go quickly.

What to Watch For

• Not a top-tier Klaviyo partner, which means less direct platform access and support.
• Smaller team with less public case study documentation. Ask for specific, verifiable results during the sales process.
• Loyalty and chatbot focus is valuable, but if you need deep Klaviyo flow architecture or complex segmentation, confirm that's within their core expertise.

9. Andzen

Website: andzen.co
HQ: Brisbane, Australia
Klaviyo Tier: Master Elite Partner
Team Size: Growing
Pricing: Custom
Best For: APAC ecommerce brands or global brands targeting APAC markets

Overview

Andzen was the first Klaviyo Master Elite Partner in the Asia-Pacific region and the 5th globally to achieve this status. They won the Klaviyo K:Partners Award for APAC in 2025 and hold Shopify Plus Partner Program membership. They cover email, SMS, Messenger marketing, lifecycle automation, and customer journey mapping.

Strengths

• APAC dominance: If your brand sells into Australia, New Zealand, or broader APAC markets, Andzen understands the regional nuances that US-based agencies don't.
• Highest Klaviyo tier: Master Elite with Klaviyo Partner of the Year for APAC.
• Multi-channel: Email, SMS, and Messenger marketing under one strategy.
• Proven results: Cheeky Chickadee achieved 200% revenue growth over 2 years.

What to Watch For

• Brisbane-based means significant time zone offset from US business hours. If you're a US-based brand, async communication will be the norm.
• Their client roster (Moana Bikini, SABO, Greenskin Wine) skews APAC. If you're a US DTC brand, ask about their US client experience specifically.
• Limited pricing transparency. Request detailed scoping before committing.

10. Dido Agency

Website: didoagency.com
HQ: Brooklyn, New York
Klaviyo Tier: Partner
Team Size: 11-50
Pricing: $3,000-$4,000/mo
Best For: Mid-market ecommerce brands that need reliable full-cycle email and SMS execution at competitive pricing

Overview

Founded in 2017, Dido Agency is a Brooklyn-based shop focused on full-cycle ecommerce email and SMS marketing. They handle the complete workflow: strategy, copywriting, design, automation, and campaign management. Their pricing sits at the accessible end of the market.

Strengths

• Competitive pricing: $3K-$4K/month puts them within reach of growing brands.
• Full-cycle execution: Strategy through implementation, so you're not coordinating between multiple vendors.
• Brooklyn ecommerce ecosystem: Embedded in one of the densest ecommerce agency clusters in the US.

What to Watch For

• Not a top-tier Klaviyo partner, limiting their platform access and early feature availability.
• Less public case study data compared to higher-ranked agencies. Ask for detailed results and client references.
• At $3-4K/month, understand exactly what's included. Lower price points sometimes mean fewer campaign sends or less strategic bandwidth.

11. Fuel Made

Website: fuelmade.com
HQ: Colbert, Washington
Klaviyo Tier: Professional Partner
Team Size: 11-50
Pricing: $5,000+/mo
Best For: Shopify Plus brands that need email marketing and CRO/development under one agency

Overview

Fuel Made has been around since 2000, making them one of the longest-tenured agencies on this list. They're a Shopify Plus Partner that combines email marketing with conversion rate optimization and custom Shopify development. If you need someone to fix your checkout flow and optimize your post-purchase emails simultaneously, this is a rare combination.

Strengths

• 24+ years in business: Survived multiple platform shifts, algorithm changes, and industry cycles. That persistence means something.
• CRO + email integration: BK Beauty saw a 118% lift in order placement rate. Turbie Twist achieved an 87% conversion bump. Those numbers come from optimizing the full funnel, not just emails.
• Shopify Plus depth: Development expertise means they can build custom solutions, not just work within template limitations.

What to Watch For

• Klaviyo Professional tier (not Master or Elite) means less direct platform access.
• Development-first DNA means email marketing is part of their offering, not the whole thing. If you need a pure-play Klaviyo specialist, this might not go deep enough on the retention strategy side.
• $5K+ starting point is higher than some competitors for email specifically, though it may include CRO work that justifies the premium.

12. SmartMail

Website: smartmail.io
HQ: International
Klaviyo Tier: Agency Partner
Team Size: Growing
Pricing: Starting at $500/mo
Best For: Early-stage ecommerce brands that need professional email management at an accessible price point

Overview

SmartMail has been operating for 8+ years and has sent over 11 billion emails while capturing 163 million new subscribers for clients. Their standout feature is accessibility: starting at $500/month, they offer a legitimate entry point for brands that can't yet justify $3-5K monthly retainers.

Strengths

• Accessible pricing: $500/month starting point is the lowest on this list, making professional email management available to early-stage brands.
• Proven ROI at scale: Tools Today achieved 78x ROI. Digital Supply saw 48x ROI. Automated flows alone delivered up to 800% ROI.
• Volume experience: 11 billion emails sent means they've encountered and solved nearly every deliverability and engagement challenge.

What to Watch For

• $500/month is accessible, but the strategic depth at that price point will naturally be limited compared to agencies charging $5-10K.
• Not a top-tier Klaviyo partner. For brands that need advanced platform capabilities, this could be a limitation.
• Best as a starting point or for brands under $2-3M revenue. As you scale, you'll likely outgrow the level of strategic support available at this tier.

13. InboxArmy

Website: inboxarmy.com
HQ: Grapevine, Texas
Klaviyo Tier: Silver Master Partner (plus 40+ ESP platforms)
Team Size: 120+ specialists
Pricing: $2,000-$4,000/mo
Best For: Brands that use non-Klaviyo ESPs or need complex ESP migrations and deliverability expertise

Overview

InboxArmy is the most platform-agnostic agency on this list, supporting 40+ ESPs including Salesforce Marketing Cloud, HubSpot, Marketo, Mailchimp, and Klaviyo. CEO Scott Cohen is the ANA's Email Marketer of the Year. They serve 5,000+ clients across 25+ industries, from DTC brands to Fortune 500 companies like Airbnb, eBay, and Spotify.

Strengths

• ESP agnostic: If you're on Salesforce, Marketo, HubSpot, or need a complex migration, InboxArmy has deeper cross-platform experience than any other agency here.
• Deliverability expertise: 95%+ delivery rates and specialized inbox placement knowledge.
• Strong metrics: Sixthreezero bicycles achieved 335% revenue increase YoY with 26:1 ROI. Generated more cart abandonment revenue in 2 months than the previous 14 months combined.
• Competitive pricing: $2-4K/month for a 120+ person team with enterprise clients is strong value.

What to Watch For

• Being platform-agnostic means Klaviyo isn't their sole focus. If you want an agency that lives and breathes Klaviyo every day, a dedicated Klaviyo Master or Elite partner will go deeper on that specific platform.
• 5,000+ clients across 120 people is a very high ratio. Ask specifically about your account team's workload and availability.
• Enterprise heritage means their processes may be more structured and less nimble than boutique agencies. Great for large operations, potentially over-engineered for smaller DTC brands.

14. MH Digital

Website: mhdigitalco.com
HQ: Denver, Colorado
Klaviyo Tier: Partner
Team Size: 2-9
Pricing: $4,000-$6,000/mo
Best For: Small to mid-size ecommerce brands that want a highly personal, hands-on email and SMS partner

Overview

MH Digital is a micro-agency based in Denver offering end-to-end email and SMS marketing. With a team of 2-9 people, they're one of the smallest agencies on this list, which means every client gets direct access to the founders and senior team.

Strengths

• Highly personal: A team this small means no layers between you and decision-makers.
• End-to-end service: Strategy, copy, design, automation, and campaign management despite the small team size.
• Denver location: Mountain time zone works well for US brands on both coasts.

What to Watch For

• 2-9 person team has inherent capacity limits. If a key team member leaves or gets sick, it can impact your account directly.
• $4-6K/month for a micro-agency is mid-market pricing. Make sure the deliverables and strategic depth justify the investment compared to larger teams at similar price points.
• Limited public case studies and Klaviyo partnership tier suggest a newer or smaller operation. Not necessarily a negative, but do your diligence.

15. Tinuiti

Website: tinuiti.com
HQ: New York (multiple offices)
Klaviyo Tier: Partner (multi-ESP)
Team Size: 1,000+
Pricing: Custom (premium enterprise)
Best For: Enterprise brands that need email as part of a massive multi-channel digital marketing engagement

Overview

Tinuiti is one of the largest independent digital marketing agencies in the US, covering paid media, CRM, email, lifecycle, Amazon, and more. They have a dedicated CRM and Email/Lifecycle division that manages enterprise-scale email programs.

Strengths

• Enterprise case studies: Bryan Anthonys saw a 1,027% increase in email marketing revenue with 281% company revenue lift. MVMT achieved 55% email conversion rate growth in 3 months.
• Scale and resources: 1,000+ employees means they can handle complex, multi-brand, multi-market operations.
• Multi-channel coordination: If you need email integrated with Amazon, paid media, and CRM all managed by one agency, Tinuiti can do it.

What to Watch For

• This is a large agency, and large agencies come with large-agency problems: layers of account management, junior team members doing the daily work, and strategy that follows frameworks rather than being custom-built for your specific business.
• Email is one division of many. Your email program may not get the same depth of attention it would at a specialized retention agency.
• Premium enterprise pricing means this isn't accessible for brands under $20-50M in revenue. And at that price point, you should be getting strategic depth, not just execution.
• This is the type of agency where you should ask specifically: "Who will be on my account day-to-day, and how many other accounts do they manage?"

16. Power Digital

Website: powerdigitalmarketing.com
HQ: San Diego, California
Klaviyo Tier: Elite Master Partner
Team Size: 500+
Pricing: Custom (premium)
Best For: Mid-market to enterprise brands that want full-service digital marketing with a data-driven retention component

Overview

Power Digital is a large full-service digital marketing agency that also holds Klaviyo's Elite Master tier. They've built a proprietary technology platform called nova that integrates data across channels, and their email/retention team operates within this broader ecosystem.

Strengths

• Klaviyo Elite Master: Top-tier partnership despite being a full-service agency, not a pure-play email shop. That's a meaningful investment in the platform.
• Proprietary technology: Their nova platform provides cross-channel data integration that standalone email agencies can't match.
• Scale with specialization: 500+ employees with dedicated retention specialists.

What to Watch For

• Full-service agencies this large inherently spread attention across many services. Email retention may be a line item on your SOW rather than the core of your engagement.
• Premium pricing reflects the full-service model. If you only need email and SMS, you're likely paying for infrastructure you won't use.
• Ask about their specific retention team: how large is it, who leads it, and how does it coordinate with the paid media and creative teams working on your account?

17. Alchemy Worx

Website: alchemyworx.com
HQ: New York, New York
Klaviyo Tier: Partner (multi-ESP)
Team Size: 50-249
Pricing: $5,000+/mo
Best For: Enterprise brands with $2M-billion+ online sales that need a seasoned email marketing operation

Overview

Alchemy Worx (formerly SellUP Inc.) has been in the email marketing space since 2001, making them one of the oldest agencies on this list. After SellUP's acquisition and rebrand, they offer full-service email marketing, social, SMS, and automation services for enterprise-level ecommerce businesses.

Strengths

• 25 years of experience: They've navigated every major shift in email marketing history.
• Enterprise-grade: Built for $2M-billion+ online sales operations with sophisticated requirements.
• Full-service CRM: Strategy, design, copywriting, reporting, segmentation, and intelligent automation.

What to Watch For

• Legacy agencies sometimes carry legacy thinking. Confirm their approach is current with 2026 Klaviyo capabilities, not retrofitted from an older ESP playbook.
• Not a top-tier Klaviyo partner, which is notable for an agency of this size and tenure. If Klaviyo is your platform, a dedicated Klaviyo partner agency will have better access and support.
• The rebrand/acquisition history means the team you're working with today may be different from the team that built the original reputation. Ask about team tenure.

18. & BAM

Website: andbam.co
HQ: Charlottetown, Prince Edward Island, Canada
Klaviyo Tier: Partner
Team Size: 11-50
Pricing: $4,000-$6,000/mo
Best For: Canadian ecommerce brands or US brands that want a North American partner outside the typical agency hubs

Overview

Founded in 2018, & BAM is a Canadian email marketing agency based in Prince Edward Island. They position themselves as an email marketing outsourcing solution for ecommerce brands, handling strategy, execution, and optimization.

Strengths

• Canadian market expertise: Understanding of Canadian ecommerce regulations, CASL compliance, and bilingual market considerations.
• Outsourcing model: Designed to fully replace your need for in-house email staff, which can be cost-effective for smaller teams.
• Competitive pricing: $4-6K/month for full-service execution is within market range.

What to Watch For

• PEI is a small market, which means a smaller talent pool for recruiting. Confirm team composition and whether key roles are in-house or contracted.
• Not a top-tier Klaviyo partner, which limits platform access.
• Fewer public case studies and US client references. If you're US-based, make sure they have relevant experience with your specific market.

19. Sticky Digital

Website: stickydigital.io
HQ: United States
Klaviyo Tier: Partner
Team Size: 11-50
Pricing: Custom
Best For: Shopify DTC brands focused purely on retention and customer lifecycle optimization

Overview

Sticky Digital positions itself as a pure retention marketing agency for Shopify brands. They focus exclusively on making customers stick around longer and buy more, rather than being a general email agency that also does retention.

Strengths

• Pure retention focus: In a market where most agencies offer email as part of a broader set of services, Sticky Digital's singular focus on retention is distinctive.
• Shopify specialization: Deep platform integration with Shopify's ecosystem.
• Content authority: They publish substantial educational content on retention strategy, which signals genuine expertise.

What to Watch For

• Newer agency with a still-building track record. Ask for specific, verifiable results and client references.
• Not a top-tier Klaviyo partner.
• Pricing isn't published. Get detailed scoping before committing to ensure it aligns with the team size and deliverable volume you need.

20. Get Better

Website: getbetter.co
HQ: United Kingdom
Klaviyo Tier: Elite Partner
Team Size: 11-50
Pricing: Custom
Best For: UK and EU ecommerce brands that need Klaviyo expertise with GDPR compliance built in

Overview

Get Better is a UK-based Klaviyo Elite Partner that takes a CRM-first approach to retention marketing. They position themselves at the forefront of Klaviyo's evolution into a full B2C CRM platform, helping brands with the complete customer experience rather than just email sends.

Strengths

• CRM-first approach: They think beyond email campaigns to the broader customer relationship, which aligns with where Klaviyo is heading as a platform.
• Klaviyo Elite: Top-tier partnership means strong platform access and expertise.
• GDPR expertise: UK/EU-based means GDPR compliance is built into everything they do, not bolted on as an afterthought.
• Personalized campaigns: Focus on segmented, targeted campaigns rather than batch-and-blast approaches.

What to Watch For

• UK-based means time zone and market knowledge are optimized for UK/EU. US brands should confirm they have relevant US ecommerce experience.
• CRM-first positioning is forward-thinking, but make sure it translates to concrete execution (flows, campaigns, revenue) and not just strategy decks.
• Limited public case studies with specific ROI numbers for US ecommerce brands.

How to Choose the Right Agency for Your Brand

After evaluating 20 agencies, here's the decision framework we'd use if we were on the brand side:

Step 1: Define What You Actually Need

• Just flows? You need a Klaviyo specialist (Flowium, Threadpoint Flows Only, Hustler).
• Full email and SMS management? Full-service agencies (Threadpoint, Chronos, Hustler, Lilo Social).
• Email + paid media under one roof? Full-funnel agencies (Lilo Social, Power Digital, Tinuiti).
• ESP migration? Platform-agnostic agencies (InboxArmy, Alchemy Worx).
• Strategic retention overhaul? P&L-focused agencies (Threadpoint).

Step 2: Match Your Revenue Stage

• Under $1M: SmartMail ($500/mo starting point) or Dido Agency ($3K/mo).
• $1-5M: One10 Media, Hustler, Flowium, or Retention Commerce.
• $5-20M: Threadpoint, Chronos, Lilo Social, or Underground Ecom.
• $20M+: Threadpoint, Underground Ecom, Tinuiti, or Power Digital.

Step 3: Ask These Five Questions

1. "What percentage of your clients' email revenue comes from discount-driven sends?" If they don't know or won't answer, that tells you everything.
2. "Who specifically will be on my account, and how many other accounts do they manage?" The answer reveals whether you'll get senior attention or junior execution.
3. "How do you measure success beyond Klaviyo-attributed revenue?" Look for agencies that track contribution margin, second-purchase rate, and LTV, not just platform revenue.
4. "Can you show me a case study where you improved business revenue, not just email revenue?" This separates strategic agencies from execution shops.
5. "What happens if we already have an in-house email person?" Good agencies see in-house teams as leverage. Bad agencies see them as threats.

Red Flags That Should Kill a Deal

After years on both sides of the agency table, these are the warning signs that should make you walk away:

• "We'll increase your email revenue by X% in 90 days." Any agency can spike email revenue with discounts. That's not the same as growing your business.
• They only talk about open rates and click rates. These are vanity metrics. The question is whether their work moves your P&L.
• They want to replace your in-house team. The best agencies work alongside your people, not against them. If they see your team as a threat, they're protecting their retainer, not your business.
• No specific case studies for your industry or size. A case study from a $500M enterprise brand is irrelevant if you're a $3M DTC brand. Ask for relevant comparisons.
• Long-term contracts with no performance clauses. If they need a 12-month lock-in, ask why results alone aren't enough to keep you.
• They don't ask about your margins, CAC, or acquisition strategy. Email doesn't exist in a vacuum. An agency that doesn't understand how their work impacts your broader business isn't doing strategic work. They're doing email production.
• The senior strategist in the pitch disappears after you sign. Ask directly: "Will the person on this call be on my account?" Get names and roles in writing.
• They can't explain their Klaviyo partner tier or what it means. Partner tiers determine access to platform support, features, and resources. An agency that doesn't invest in their partnership isn't investing in their ability to serve you.

Frequently Asked Questions

How much should I expect to pay for a Klaviyo email marketing agency?

Entry-level services start around $500-$2,000/month for basic automation and campaign management. Mid-market full-service agencies typically charge $3,000-$7,000/month. Premium boutique and enterprise agencies range from $5,000-$20,000+/month. The right price depends on your revenue, complexity, and what you need the agency to own. As a general benchmark: if your email program is generating less than 3-5x the agency fee in incremental (not just attributed) revenue, the economics don't work.

What's the difference between Klaviyo partner tiers?

Klaviyo's partner tiers (Bronze through Elite Master) are based on the number of clients managed, revenue generated, certifications held, and client satisfaction scores. Higher tiers get dedicated partner managers, early access to new features, direct engineering support, and priority service. For brands, working with a Master or Elite tier partner means your agency has a direct line to Klaviyo's product and support teams, which translates to faster problem resolution and access to capabilities before they're widely available.

Should I hire a Klaviyo-specific agency or a full-service marketing agency?

If Klaviyo is your primary ESP and email/SMS is the core of what you need, a Klaviyo-specific agency will go deeper on the platform. If you need email integrated with paid media, SEO, and creative under one roof, a full-service agency provides coordination advantages. The tradeoff is depth vs. breadth. In our experience, brands get better retention outcomes from specialists, but you need strong internal coordination or a separate acquisition agency if you go the specialist route.

How long does it take to see results from an email marketing agency?

Expect the first 30-60 days to be focused on audit, setup, and strategy. Quick wins from fixing broken flows or improving deliverability can show within 2-4 weeks. Meaningful business impact (improved LTV, reduced CAC, margin growth) typically takes 3-6 months because it requires behavioral changes in your customer base that take time to compound. Any agency promising transformative results in 30 days is likely planning to discount their way to a flashy first report.

What metrics should I use to evaluate my email agency's performance?

Beyond the standard Klaviyo metrics (revenue per recipient, click rate, flow revenue), the metrics that actually matter are: contribution margin from email, second-purchase rate, 60-day LTV by acquisition channel, percentage of email revenue from non-discount sends, MER (marketing efficiency ratio), and CAC trends. If your agency isn't tracking or reporting on at least some of these, they're measuring activity instead of outcomes.

Can I use an email agency if I already have an in-house email person?

Absolutely, and it's often the best setup. Your in-house person handles day-to-day sends and brand consistency. The agency provides the strategic and technical layer: flow architecture, segmentation strategy, deliverability management, A/B testing frameworks, and advanced Klaviyo features. The key is finding an agency that embraces this model rather than one that wants to own everything. Ask about this explicitly during the sales process.

How do I know if my current email agency is underperforming?

Ask yourself: What percentage of my email revenue comes from discount-driven sends? If it's over 50%, your agency is likely propping up numbers with coupons rather than building real customer value. Other signs: stagnant second-purchase rates, declining LTV despite growing email revenue, increasing discount dependency, and an inability to explain how their work impacts your broader business metrics beyond Klaviyo's dashboard.

Sources and Methodology

This guide was compiled using the following sources:

• Klaviyo Service Partner Directory - Official partner tier verification
• Clutch.co - Verified client reviews and agency ratings
• Inc. 5000 - Growth and revenue validation
• Individual agency websites and published case studies (accessed May 2026)
• Klaviyo Partner Awards and K:BOS conference announcements
• Direct industry experience managing 100+ client digital marketing operations at Digital Position

Pricing, team sizes, and partnership tiers were verified as of May 2026 and are subject to change. We encourage brands to confirm current details directly with each agency during the evaluation process.

Have questions about choosing the right Klaviyo email agency for your brand? Reach out to Threadpoint for a free financial diagnostic - even if you don't end up working with us, we'll help you understand what your bottom funnel should actually be doing for your P&L.

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