The Top 7 Klaviyo Agencies in 2025

Klaviyo is one of the best tools for brands to use to boost engagement and revenue with email, push notifications, SMS and more. But setting up and running effective Klaviyo campaigns can be complicated and time-consuming.

That's why you might want to consider hiring an agency to manage your campaigns, leaving your team free to continue your existing workflow.

Pairing with the right agency can be a huge boost, but finding the right agency is difficult. That's why we've made this post, to help you zero in on the perfect partner for your brand.

Keep reading and learn our top picks for the best Klaviyo agencies out there today.

1. InboxArmy

InboxArmy stands out as a top U.S. email marketing agency specializing in deliverability, automation, and large-scale campaign management. Based in Grapevine, Texas, and founded in 2016, they’ve managed campaigns for over 5,000 brands across 25+ industries, including ecommerce, SaaS, and healthcare.

Their expertise lies in combining technical precision with creative strategy. InboxArmy conducts domain and IP audits, authenticates senders with SPF, DKIM, and DMARC, and warms IPs for optimal inbox placement. The agency often lifts deliverability above 95%, driving measurable boosts in engagement and sales for clients like Spotify and Airbnb.

Led by CEO Scott Cohen, InboxArmy’s 60+ team handles everything under one roof, strategy, design, development, automation, and compliance. Their Klaviyo Master Silver Partner status reflects deep proficiency across ESPs such as Salesforce, HubSpot, and Marketo.

And if consistency is the name of the game, InboxArmy plays to win. Clients report seamless migrations, increased sender reputation, and stronger ROI within the first quarter of collaboration.

Key Services

• Full deliverability audits, IP/domain warming, and reputation recovery
• ESP migration and platform evaluation for 50+ providers
• Advanced lifecycle automation and email flow setup
• Responsive template design and HTML coding
• SMS and multichannel automation integration
• Campaign management, reporting, and compliance oversight

2. Chronos Agency

Chronos Agency is a top pick, renowned for boosting profits for fast-growing DTC brands using Email, SMS, and Push Marketing. Their expertise and strategic marketing skills have led to revenue increases of 20% to 30% for ecommerce businesses. With a global team of 80, they act as an extension of your own business, handling everything from copywriting and graphic design to strategy and execution.

Chronos Agency has generated over $181M in returns from email, impressing more than 300 clients with an average ROI of 3500%. They’ve collaborated with big names like The Oodie, Truly, Cise, and Forchics. With Chronos, it’s like having a top-tier marketing department without the hassle of office coffee runs or awkward water cooler chats.

Key Services 📝

• They craft strategies to boost email open rates with engaging subject lines tailored to your audience.
• They streamline customer journeys, engaging your subscribers and boosting conversions.
• Chronos dives into your DTC store’s email marketing systems to identify and fix issues, creating a detailed action plan to accelerate your brand's growth.
• Their advanced customer behavior segmentation targets promotional emails, upsells, cross-sells, and engagement emails for maximum opens, clicks, and sales.
• Through continuous A/B testing, they ensure your emails deliver the highest possible ROI, tweaking everything from design to subject lines and send times to unlock hidden revenue for your store.

3. Aspekt

Working with brands like Mark Ingram and Urban Tots, one of the best standouts in this list is Aspekt, known for their expertise in both social media and email marketing, with Klaviyo as their trusty tool.

They understand that in today's digital world, an omnichannel approach is key, making sure all your marketing channels play nice together. Boasting an impressive track record, including over $10M in average revenue growth and 30M+ total emails sent, they prove that seeing the big picture leads to big results.

So, if you're looking to turn those Instagram likes into email opens and maybe a few cha-chas, Aspekt could be the perfect fit.

Key Services 📝

• They have SMS marketing strategies that build priceless customer relationships, through customized SMS campaign management, so you never have to guess what to send next.
• Aspekt has SMS automation that ensure your subscribers get the right message at the right time!
• Always have your customer base in check with copy and designs that convert highly while staying true to your brand, with subscriber growth strategies to keep your SMS list growing around the clock.
• Continuous optimizations for high click and conversion rates and Constant monitoring and improvement of SMS deliverability to avoid any blacklist surprises.

4. The Email Marketers

Working with brands like Nerd, bud.com, and Cove, The Email Marketers offer a full suite of email marketing services specifically tailored to the Klaviyo platform. This includes everything from strategic campaign planning and eye-catching template design to compelling copywriting, advanced automation setup, in-depth segmentation, and ongoing performance analysis.

Their strength lies in providing end-to-end Klaviyo solutions designed to support ecommerce brands with diverse email marketing needs.

Key Services 📝

• They develop email and SMS strategies that center around each customer’s unique journey. No more generic blasts; expect strategies as personalized as your grandma’s secret recipe.
• Your brand is one-of-a-kind, and so are their creative designs and copywriting. They focus on making your emails not just seen, but clicked, and converted.
• With a focus on spam prevention and deliverability, their email strategies are like the secret sauce to keep your messages in inboxes and out of junk folders.
• If you’re head over heels for email and want more, they optimize your on-site opt-ins and run list-growth campaigns that make your subscriber list grow faster than a viral cat video.
• Forget stressing about next week’s emails and SMS; they’ll map out your entire quarter with detailed campaign management and lifecycle automation, so you can focus on other things—like taking that well-deserved coffee break.

5. Arcady Media

When it comes to Klaviyo agencies, Arcady Media stands out with its impressive roster of over 300 satisfied clients, including well-known names like Hudson’s Bay, Ice Carats, PocketSpeech, and Tanoa. Arcady Media offers a complete email and SMS marketing solution tailored specifically for ecommerce businesses.

Their team of experts ensures that personalized campaigns are not just a possibility, but a reality, driving both sales and customer engagement. They manage to deliver a full-service approach that replaces the need for multiple employees, all at a fraction of the cost—because who doesn’t love saving money without sacrificing quality?

Key Services 📝

• Seamless migration from any platform to Klaviyo, complete with a comprehensive audit and action plan—because switching shouldn’t feel like a leap into the unknown.
• They have a dedicated team of 6 experts ready to cater to every marketing need.
• Get In-depth competitor data analytics, covering frequency, terms, and send times—so your strategy is always a step ahead.
• With Arcady, get tailored retention strategies, including customer journeys and loyalty programs—because keeping customers is just as important as attracting them.
• Stay on top with creative implementation and detailed reporting—because success is in the details.
• Robust email and SMS flows, monthly campaigns, and pop-up builds, all optimized for maximum impact—because there’s always room to make things better.

6. DataSauce

When partnering with top brands like Godiva, Mister Zimi, Cygnett, and Daily Blooms, Data Sauce proves that retention marketing is more than just sending emails. It’s about crafting strategies that turn casual shoppers into loyal customers.

Imagine your CRM system becoming your brand's best friend, not just a digital address book. With expertise in everything from seasonal campaigns to data enrichment, Data Sauce makes sure your marketing efforts don’t just fill inboxes but actually drive results.

Key Services 📝

• Data Sauce applies time-tested best practices to make sure every email and SMS is captivating and engaging, so your messages don't end up in the spam folder!
• If your emails are getting lost in spam, Data Sauce will audit your account and use proven strategies to get them back into the inbox. No more email ghosting.
• With extensive experience and deep technical know-how, Data Sauce can elevate your CRM strategy to new heights, ensuring your email campaigns are always on point.
• The creative team at Data Sauce breathes new life into your email designs, using data-driven insights to ensure your messages are fresh and effective. Outdated designs? Not on their watch.
• Data Sauce will streamline your marketing efficiency through smart automations, helping you generate passive revenue without blowing your ad budget!

7. Sticky Digital

If you’re seeking top-notch retention marketing, here’s why Sticky Digital deserves a spot on your radar. This agency specializes in making your customers stick around through email, SMS, loyalty programs, and tech stack optimization.

With a clientele that includes names like One Size, Nest Fragrances, and Uqora, and boasting an impressive 4200% ROI on email marketing, they truly know how to keep customers hooked.

Key Services 📝

• Sticky Digital builds email and SMS programs that weave seamlessly into your tech stack, creating unforgettable and profitable user journeys. It’s like having a personal shopper who knows exactly what you want before you even say it!
• As Shopify experts, they craft tech stacks that don’t just look good; they work hard. They follow the “less is more” philosophy, creating streamlined and efficient tech stacks for Shopify that will make your wallet happy and your tech woes disappear.
• Whether it’s through subscription models, loyalty points, or exclusive perks, Sticky Digital’s strategies ensure your customers stay engaged. Their proprietary persuasion system has successfully scaled over 50 brands from modest figures to impressive revenues, proving that they’re the real deal.

Wrapping Up

Choosing the right agency is like finding the perfect dance partner—they need to be in sync with you, and they must understand your brand and audience.

A top Klaviyo agency should truly understand your audience, much like a friend who always picks the right movie for a group watch. They need to be skilled in segmenting your list to target demographics, preferences, and behaviors. A stellar agency will craft intriguing subject lines that prompt opens without resorting to clickbait. Personalization is key; your subscribers should feel like they're receiving a tailor-made experience.

The agency should ensure your content is direct and engaging—think of your emails as express trains: fast, efficient, and to the point. With a mobile-first design, your emails should look impeccable on any device.

It might take some trial and error, but once you find the right agency, they can seriously elevate your push notification and email marketing game and drive impressive results, while taking a ton of load off your team.