Found a way to automate A/B testing emails without paying for fancy software

I kept running into the problem of testing subject lines manually for my newsletter, taking hours to split lists and track results. Last week I set up a simple Google Sheets script tied to Mailchimp's free API that randomly assigns subscribers to groups and logs open rates automatically. It's not perfect but it saved me about 5 hours on a 3-variant test. Has anyone else hacked together something similar with free tools that actually worked?

2 comments

2 Comments

the_emery13d ago

Mailchimp's free API limits you to 500 contacts, so that setup breaks fast.

val_williams13d ago

500 contacts is a hard wall, @the_emery, I always thought you could just stick with free forever but you’re right that it hits fast. That really changed my mind about relying on it long term.