Subject Lines That Earn the Open
Curiosity works when it clearly implies value: not clickbait, but a gap worth closing. A founder shared that “You left time on the table” beat “Quick update” by 27% in a week-long test.
Subject Lines That Earn the Open
Use behavioral personalization: reference the article they favorited, the feature they hovered over, or the city of their upcoming event. It feels helpful, not creepy, when relevance is obvious and respectful.
Subject Lines That Earn the Open
Run controlled A/B tests twice monthly: one variable at a time, equal audience sizes, and clear success metrics. Share back results with your list to build trust and invite reply-driven insights.