Repeat Purchases: The AI-Powered Email and SMS Program That Sells Again to Past Customers

Most online stores pay to acquire every customer, sell to them once, and then let them disappear.

Then they pay again to acquire someone new.

Meanwhile, their customer list, the people who already trusted the brand with a credit card, sits in Klaviyo with a welcome email and a monthly newsletter.

Where repeat revenue comes from

Core flows: welcome series, abandoned cart and browse, post-purchase, win-back and replenishment. Segmentation: first-time buyers, VIPs, people at risk of churning, category buyers. Campaigns: launches, restocks and promotions sent to the right segment, not the whole list. SMS: for time-sensitive messages, sent only to subscribers who opted in. Testing: subject lines, offers, timing and creative.

Where AI helps

AI predicts who is likely to buy again and when, suggests which product each customer is most likely to want next, drafts variations of copy for testing and spots segments that are slipping away. A strategist decides what to send; AI makes each send more relevant.

Try this diagnosis

What share of your revenue comes from returning customers? How many of your core flows are live and tested? When did you last send a campaign to a specific segment instead of the whole list? Do you know which customers have not bought in 120 days?

How Ímpetus runs your retention program

Audit of your current setup, rebuild of core flows, segmentation, weekly campaigns, SMS program, AI-assisted personalization, testing and a monthly report on retention revenue.

What retention agencies charge in the US

According to Darkroom's 2026 guide, Klaviyo-focused retention agencies charge $3,000 to $5,000 a month at the starter tier, $5,000 to $8,000 for mid-tier programs with SMS, and $8,000 to $10,000+ for full-service lifecycle work.

The Ímpetus offer

Retention program for $1,990 a month

Core flows, segmentation, weekly campaigns, SMS and AI personalization. About half of a starter-tier retention agency.

Klaviyo (or your platform) and SMS sending costs are separate.

Why spots are limited

Good retention work requires knowing your products and customers. We take on only a few new brands per month.

Frequently asked questions

Which platforms do you use?+

Mostly Klaviyo, but also Omnisend, Attentive, Postscript and others.

Will you send more emails to my list?+

More relevant emails to the right segments, and fewer to people who are not engaging. List health matters.

Is SMS compliant?+

We only send SMS to subscribers who gave consent, following TCPA rules and carrier requirements.

How fast will I see results?+

Rebuilt flows often show impact in the first month. Campaign and segmentation gains build over two to three months.

What does it cost to ignore past customers?

Every customer who bought once and never came back is acquisition money you will spend again on someone new. A working retention program lowers your blended acquisition cost every month it runs.