Email Subject Line A/B Test Generator

Difficulty: Beginner | Time to implement: 10 min | Saves you: ~2 hrs/week Tools: ChatGPT / Claude

Most small business owners write one or two subject lines, pick the one that "feels right," and hit send. But your subject line determines whether anyone reads your email at all — roughly 47% of recipients decide to open based on the subject line alone. This template generates 10 subject line variants organized by four proven psychological triggers, complete with preview text suggestions, so you can A/B test with confidence instead of guessing. It works for any campaign type — promotions, newsletters, product launches, event invitations, or re-engagement sequences.