Govarova Outreach
Run multi-step cold email cadences with AI personalisation, tracking, and a built-in CRM.
Cold Email & Outreach · Free forever
Free A/B Test Generator for Cold Emails
What to A/B Test in Your Cold Email Sequence
Get 10+ test ideas for subject lines, CTAs, length, and personalization. Stop guessing and start optimizing your sequence performance with data.
Run the tool
Everything happens in your browser. Nothing you paste is uploaded or stored.
Under the hood
How this tool works
No black box. This is the exact logic the tool runs on every input you give it.
Formula
Sample size ≈ 16 × p(1−p) / (MDE)² per variant, one variable changed per test
- 1
Parse your input into tokens — brand, role, industry, and outcome words.
- 2
Match those tokens against a bank of proven, field-tested copy frameworks.
- 3
Fill each framework, then score every variant for clarity, specificity, and spam risk.
- 4
Return the highest-scoring variants, ranked, so the best option is the first one you read.
Need this at scale?
Two Govarova products that do this automatically
The free tool handles one input at a time. These handle millions — verified, enriched, and ready to send.
Email Verification API
Validate every address in real time and block disposable, invalid, and trap emails at signup.
More free cold email & outreach tools
Register & start — free
Run Free Cold Email A/B Test Idea Generator as often as you like. When you are ready to do it across your whole market, Govarova is waiting.