Show HN: I added A/B testing to my cold email generator – does this add value?
2 ZeeeTH 6 7/9/2025, 10:21:33 PM coldcopy.xyz ↗
I built ColdCopy (coldcopy.xyz) a few days ago to solve my own cold email writing struggles. Initially it just generated one personalized email, but I kept wondering "should this be more direct or more friendly?"
So I added A/B testing - now it generates 3 versions (Professional, Friendly, Direct) side-by-side so you can compare and pick the best approach.
Early users seem to like having options, but I'm curious if this is genuinely useful or just feature bloat. Does having multiple versions actually help with cold outreach, or does it create decision paralysis?
The technical implementation was straightforward - same form data, three API calls with different prompt variations, display in a responsive grid. But I'm more interested in whether it solves a real problem.
Built with Next.js 14 + OpenAI API. Currently free with daily limits.
What do you think - is A/B testing for cold emails useful, or am I overthinking this?
The issue with Gmail’s built-in writing assistant is that it only gives a single suggestion, and it’s always a binary yes/no. I usually end up declining it.
With multiple versions, there's a higher chance one will resonate. Plus, I can mix and match the best parts to suit my tone. So yes, I think offering variations is definitely the right move.