For sales reps, founders, and anyone who sends outbound email
See who opened your email. Know who to follow up with.
Followthrough watches your sent mail inside Gmail and sorts every thread into Follow up or Watching — so you always know what needs your attention next, without opening a CRM.
This page tracked that you opened it — that's Followthrough, running quietly inside a Gmail inbox. It's a lightweight extension that tells salespeople and founders which of their emails are actually getting read, so they know who to follow up with and who to leave alone.
Automatic, not manual
No logging activity by hand. Followthrough reads your Sent folder and figures out what happened — reply, click, or silence — on its own.
Two buckets, not a dashboard
Follow up: threads that went quiet and need a nudge. Watching: threads where a prospect just showed interest. That's the whole system.
Lives in Gmail
No new tab, no new login. It's a popup in the browser toolbar, right where you're already sending email.
Built for teams
Every rep gets their own signed-in mailbox and their own buckets — nothing shared, nothing to configure per seat.
Followthrough is in early access. We're onboarding a small number of teams before opening it up broadly.
Stop guessing who to follow up with
Join the waitlist and we'll email you the moment your seat is ready.