Own
Your Revenue

Stop burning cash on ads. Convert the traffic you already paid for.

If you’re an e-commerce brand doing $500k+ annually.

You need CartStrings.

[ The CartStrings Effect ]

CartStrings results speak for themselves

At CartStrings, we're obsessed with 1 thing: retention. We turn one-time buyers into repeat revenue for established e-commerce brands.
We stay focused so we can deliver elite results for elite brands.

Learn More

Form submission

32%

Average Email Attributed Revenue

39%

Average Open Rate

99.8%

Delivered to Inbox

Illustration of a businessperson climbing upward on ascending bar chart with an arrow, looking at a watch.

[ THE PARTNERSHIP MODEL ]

We’re not an agency. We’re your retention team.

Plug us in as your internal retention department.

Black and white pie chart illustration with five business people, each in a separate segment, posing with different hand gestures.

We work alongside founders, marketers, & growth teams as a long-term partner not a task-based vendor.

Strategic ownership, not just execution
Proactive optimization, not reactive requests
Decisions based on generating revenue.

Partner with us

Are you maximizing
your email revenue?

Get a Free Klaviyo Audit

[ Core Specialization ]

Built for E-Commerce

CartStrings exists for one purpose: to make retention a predictable, scalable revenue channel for established e-commerce brands — owning email and SMS end to end.

Email Deliverability & List Health

Keep lists clean & segmented.

High-Converting Lifecycle Flows

Automated flows that drive revenue.

Conversion-focused email design

Design that guides clicks, not just looks good

Deep technical setup & automation logic

Advanced automation built for scale

Trusted by Leading
E-commerce Brands

[ our services ]

Everything your email needs
to perform

From strategy to excecution, one seamless experience

Our Process

The Klaviyo Account Audit

Find and fix hidden revenue leaks.

Full-Service Email Campaigns

Strategic broadcasts that drive consistent monthly revenue.

Automated Email Flows

Generate sales 24/7 with behavior-based triggers.

Popups & Email Capture Strategy

Turn anonymous website traffic into owned leads.

Deliverability & Compliance

Ensure your messages actually reach the inbox.

[ our process ]

A proven system,
not a guessing game

Audit & Diagnosis

We dig into your store, Klaviyo, flows, lists, and benchmarks to uncover revenue leaks.

Rebuild & Optimize

We rebuild flows, rewrite copy, redesign creatives, fix segmentation, and improve deliverability.

Scale & Own the Channel

We become your email department testing, optimizing, reporting, & continuously increasing your bottom line.

Get Started with a free Klaviyo Audit

Illustration of a woman sitting with a mobile device next to a large smartphone screen showing an online shopping interface with a shirt and a shoe, and a shopping bag nearby.

[ Qualify leads ]

Who We’re Built For

Established e-commerce brands
$500k+ in annual revenue
Founders & marketing leaders
Brands that expect email to drive revenue, not just send campaigns

Work With CartStrings

[ Key Results ]

Success Is the Standard

Revenue

Automated flows and strategic campaigns that consistently drive bottom-line sales.

Retention

Precision segmentation that transforms one-time buyers into loyal, repeat customers.

Deliverability

Clean lists and inbox optimization
that keep your emails
out of spam.

[ Testimonials ]

Our clients speak for us

CartStrings is the best money we spend every month. Hands down. Email is now our strongest channel and I don't even have to think about it.

Rachel Stein

Founder, LuxeNest Home

We tried doing Klaviyo ourselves for almost a year and it was a mess — half-built flows, campaigns going out late, no real strategy behind any of it. Meilech came in, took it completely off our plate, and now everything just runs. Wish we'd done this from day one.

David Park

Head of Marketing, ThreadCraft Apparel

I was skeptical about hiring another email agency after getting burned twice. Meilech's audit in the first week completely changed my mind — he caught things no one else even looked at. We've been with CartStrings since and I'm not going anywhere.

Sarah Goldberg

Co-Founder, PureGlow Skincare

Seriously can't recommend CartStrings enough. Our email performance has completely turned around since working with them.

Michael Torres

Director of Operations, Summit Outdoor Gear

What I appreciate most is that every email actually sounds like us. Other agencies we worked with would send over these generic templates that could've been for any brand. CartStrings gets our voice and our customers — it makes a huge difference.

Alyssa Brennan

Founder, Olive & Stone Jewelry

The ROI on CartStrings speaks for itself. Our abandoned cart recovery alone more than covers what we pay them.

Jordan Ellis

E-Commerce Manager, FitForm Athletics

We were way too dependent on ads and knew we needed email to be a real revenue channel, not just a newsletter. Meilech built the whole thing out for us and it's become one of the biggest drivers of our growth this year. Really solid team to work with.

Ben Kaplan

CEO, ModernEdge Furniture