Fair splits
Variants sent to matched audiences at the same time of day.
Cold email copy testing
Fire-test your cold emails before you send.
ReplyKiln splits your subject lines, openers and calls to action into fair tests and tells you which version earns more replies.
Subject line test
- "Quick question, {first}"●2.1% reply
- "{Company}'s Q4 hiring"▲4.8% reply
- "Idea for {company}"●3.2% reply
- "Re: partnership"!0.9% reply
What you get
Reply-based results
We measure replies, not opens, because opens lie.
Copy library
Winning lines saved so your whole team can reuse them.
How it works
- 1
Write variants
Two to four versions of any part of your email.
- 2
Send
Connect your sequencer and launch.
- 3
Keep the winner
Results reach significance in about a week.
Get in touch
Leave your email and we will reply within one working day, or write to us at hello@replykiln.com.