Core flow buildout
Welcome, browse abandon, cart abandon, checkout abandon, post purchase and winback, written and designed.
Retention only, since 2019
Get 30 percent of revenue from your list
We build the flows, run the weekly campaign calendar and fix the deliverability problems that quietly cap your sends. Email and SMS only.
6 yrsretention only
31%median email revenue share
140+brands onboarded
4.2Memails sent monthly
What we do
Flows, campaigns, SMS and the boring list hygiene
Most brands come to us with flows that were set up once and never touched again.
Managed campaigns
Eight to twelve sends a month with segmentation, design, copy and reporting.
SMS program
Compliant opt in collection, keyword flows and campaign sends alongside your email calendar.
Deliverability repair
Domain authentication, sunset policies and a warm up plan when your inbox placement has fallen off.
Popup and list growth
Tested capture forms and offer logic that grow the list without wrecking your discount margin.
Why retention
The cheapest revenue you already own
Sendline was founded by an ecommerce operator who watched a brand spend $90,000 a month on acquisition while its welcome flow was three unedited emails from 2019. We do one thing, which means we see the same problems across 140 brands and know what fixes them.
•Klaviyo and Attentive certified partner team
•Monthly revenue reporting split by flow and campaign
•Copy and design in house, no outsourced templates
Reviews
Results our clients report
“Email went from 12 percent of revenue to 29 percent in five months. The cart flow alone paid the retainer twice over.”
Bianca L., Skincare brand owner
“Our open rates had collapsed and nobody could tell us why. They found an unauthenticated sending domain in week one.”
Derek M., Ecommerce manager, apparel
FAQ
Questions we get weekly
How fast will we see a lift?
Flow revenue usually moves within three to four weeks because flows start firing the day they go live. Campaign performance improves over the first two months as we learn what your segments respond to.
Do you work in platforms other than Klaviyo?
We work in Klaviyo, Attentive and Postscript day to day, and we can support Braze and Iterable for larger brands. If you are on a platform we cannot support well, we will tell you rather than learn on your account.
Why did our open rates drop after Apple and Gmail changes?
Opens became unreliable once mail apps started prefetching images, and inbox providers tightened bulk sender rules. We report on click rate and revenue per recipient instead, and we authenticate your domain so the tightened rules work in your favor.
Will you discount our list to death?
No. We track discount depth and margin alongside revenue, and a chunk of our calendar is non promotional content. Brands that only ever send codes train customers to wait for one.
Contact
Free flow audit
Give us view access to your Klaviyo account. You will get a 15 minute video walkthrough of what is leaking revenue.
Phone(372) 555-0172
Address615 Channelside Drive, Unit 6, Tampa, Florida
HoursMon to Fri 9am to 6pm ET
AreaRemote, ecommerce brands across the US and Australia