Klaviyo Certified · Email & SMS

Email that earns its keep.

We make email 40% of your store revenue within 60 days. If we don't, you don't pay. Lifecycle email marketing systems for D2C brands focused on repeat revenue.

$$0M+
Attributed Revenue
0
Brand Partners
0%
Repeat Revenue
0×
Avg Email ROI
Our services

Built around maximizing revenue from your one time customers.

Get email campaigns and flows that drive repeat purchases. This covers your Welcome flows, post-purchase, abandoned cart, replenishment, and win-back. Klaviyo-native, segment-driven, and rebuilt as your data sharpens or needs arise.

Talk to us  →

Promotional sends that protect deliverability and drive revenue. Calendar planning, segmentation, copy, design, send time optimization, A/B testing, and weekly performance review.

Talk to us  →

Inbox placement is the hidden multiplier on every send. We monitor reputation, authentication, list hygiene, complaint rates, engagement quality. Permanent service, not a one-time audit. Most clients see deliverability move from 84% to 97% in three months.

Talk to us  →

Senior eyes on your existing program. Free audit if there's fit. Then optional strategy retainers for in-house teams that need direction without the full-service price tag.

Talk to us  →
Postscript
Attentive
Sendlane
Recharge
Skio
Yotpo
Junip
Loop
Gorgias
Shopify
Triple Whale
Platform Certified

Klaviyo first. Stack chosen per brand.

We specialize in Klaviyo for D2C retention, plus partner with the platforms below for full-stack execution. Dedicated support and product roadmap access before they ship.

Testimonials
Satisfied client

"Haseeb is a big professional. Every question we had he provided very detailed answers. Highly responsive, always willing to help, and recorded detailed walkthroughs so we could reproduce things after the collaboration."

Game Biz
Founder & CEO
Satisfied client

"I've been working with retainr for our email marketing campaigns and the results have been outstanding. Their strategy is clear, targeted, and highly effective. Highly recommended for anyone serious about email."

Vape At Door
Founder & CEO
Satisfied client

"Very happy with Haseeb's team on guiding the email marketing process. They moved us from no system to a real revenue channel in weeks, not months."

Twinky Store
Founder & CEO
Satisfied client

"We're thankful that we chose your agency. With a Fox News feature five days out and zero email infrastructure, they built everything from scratch. Flows alone drove 15% of revenue from the spotlight."

Jack
Founder, US Boot
Satisfied client

"WOW. Now that is an upgrade. Their first new campaign designs were a step-change from anything we'd had before. The whole brand started feeling more premium overnight."

Elijah Canfield
Founder, Pop-up Tee
Case studies

Proof, not promises.

Skincare Lab
Skincare & Biotech
$1M+
Klaviyo attributed in 4 months

A skincare and biotech brand wanted retention to become a real revenue channel. We rebuilt campaigns, flows, email and SMS together. Four months in, Klaviyo was driving 52% of total store revenue.

  • Q4 2025: $380K attributed, up 999% vs prior
  • Jan-Feb 2026: $682K, up another 122%
  • Deliverability score 90/100: 48.4% open, 0.31% bounce
Lifecycle SMS Deliverability
US Boot
Footwear
15%
Of total revenue from flows alone

Texas-made boot brand was about to be featured on Fox News with zero email setup. No flows, no popup, no list. We built the full system in 5 days and captured the spotlight traffic before it hit the homepage.

  • Flows live in 5 days: welcome, cart, browse, post-purchase
  • Two popup forms shipped: time-delay and exit-intent
  • 15% of total revenue from flows alone, post-feature
Flows List Growth Speed
Vape At Door
UK D2C
30%
Of monthly store revenue

Designs were cluttered, off-brand, and not built to convert. The founder was tired of "pretty" emails that didn't sell. We rebuilt every template around one job: drive the click. Customers now compliment the emails. Email owns 30% of monthly revenue.

  • Templates rebuilt: conversion-led, brand-aligned
  • 30% of total revenue from email, sustained monthly
  • Customer feedback flipped: indifferent to actively praising
Campaigns Design Brand
Twinky
Baby Products · NL
19×
Campaign revenue lift

Dutch baby brand whose campaigns drove just 0.51% of revenue. The team had given up on email as a meaningful channel. We installed a monthly rhythm, mixed promotional with educational, and rebuilt designs around the brand's actual identity.

  • Campaign revenue: 0.51% to 9.89% in three months
  • Branded templates built for conversion, not decoration
  • Monthly send rhythm replaced ad-hoc execution
Campaigns Strategy
60-Day Contractual Promise

Email becomes 40% of your store revenue in 60 days, or you don't pay.

We put it in writing. If our system doesn't drive at least 40% of your store's total revenue within 60 days of going live, you get every dollar back. No fine print. No clawbacks. No "yeah but."

FAQ
Lifecycle email marketing systems for D2C brands focused on repeat revenue. We handle strategy, copy, design, and implementation from end to end, so you don't have to. Klaviyo is our primary platform.
Founder-led D2C brands with strong product but under-built email. 30+ partners across skincare, fashion, supplements, food, footwear, baby products, vape, home. Average tenure 14 months.
Yes. It's in the contract. If our system doesn't drive at least 40% of your store's total revenue within 60 days of going live, you get every dollar back. No clawbacks, no fine print. We can do this because we've done it 30+ times.
Klaviyo for email and SMS, primary. Postscript or Attentive when those are already in place. Recharge or Skio for subscriptions. Yotpo or Junip for reviews. Stack picked per brand.
We optimize for attributed revenue, not vanity metrics like open rates unless needed. We own subscriber list growth optimization and deliverability score improvement as a permanent service. We bill fixed monthly with explicit deliverable scope.
Pricing is fixed monthly, scoped to the setup your brand needs. Audit is absolutely free. Strategy engagements start at $5K monthly. Full-service lifecycle programs start at $8K monthly. We don't take percentage-of-revenue deals.
Book a 30-minute call. Three questions about your current setup, then we book the audit if there's fit. Audit takes ten business days. Useful even if we don't end up working together.