The 5-Step A/B Testing System ✅
Let’s talk about something most people think they’re doing right… but usually aren’t.
A/B testing your cold emails.
Everyone says “just test your emails”…
But if you test the wrong things, in the wrong order… you’ll waste weeks and learn nothing useful.
So here’s the simple way to actually use A/B testing to find what works FAST 👇
Step 1 - Use separate campaigns to test AUDIENCE
Don’t start with copy.
Start with who you’re targeting.
Clone your campaign and split it by:
  • industry
  • company size
  • geography
  • role
This tells you quickly who actually cares about what you offer.
Step 2 - Use A/B variants to test your copy + offer
Once the audience is dialed in, start testing:
  • subject lines
  • email body
  • CTA
  • and especially your offer
If you’re new → pick ONE variable (like the offer) and test that first.
Keep it clean.
Step 3 - Test ONE thing at a time
Your email has 3 main parts:
  • Lead → subject line + preview + first sentence (gets the open)
  • Body → context + value + offer (builds interest)
  • CTA → what you want them to do next
Change one section at a time so you actually know what caused the result.
Step 4 - Track the right signals
Replies are good.
But sales > replies.
Sometimes one version gets more replies… but worse quality.
So always look at:
- positive replies
- booked calls
- closed deals
That’s how you find the real winner.
Step 5 - Start with the highest-impact tests
The order that usually works best:
1. Audience
2. Offer
3. Copy tweaks
If your subject line is decent, fixing audience + offer alone can 2-3x your results.
Small tests → fast feedback → better campaigns.
That’s how you build a cold email machine that actually scales.
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6 comments
Jay Feldman
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The 5-Step A/B Testing System ✅
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