Try it free
Score your own subject line in seconds.
No account, no card. A real prediction on the line you type below.
The problem
You've been
sending blind.
Every send is a coin flip. You write, you guess, you hope — and learn what worked only after the inbox has spoken.
Mailmap changes that.Before
Open rate?
Click rate?
Spam risk?
Sales lift?
With mailmap
Open rate42.6%
Click rate6.2%
Spam riskLow · 0.4%
Sales lift+18%
How it works
Three steps to the edge.
01
Connect your ESP
One click. We read-only your data.
02
We learn your account
We analyze your audience, voice & performance.
03
Predict & improve
Instant forecasts & concrete fixes ranked by impact.
Works with
Klaviyo·Mailchimp·more ESPs coming
+22%
Lift in revenue per send
−41%
Drop in multi-variant test frequency
3.4×
More winning campaigns shipped per quarter
Your next send doesn't have to be a guess.
Connect your ESP, paste a draft, watch the forecast appear.