JulieDx
EmailDxSubject Line Tester
§Intake

Which subject line wins?

Paste two to four subject lines. Get a ranked decision sheet with grades, scores, and the pattern across all of them.

← Diagnose the full email instead
Subject lines two to four, each with optional preheader
01
02
§ AContext flags
Audience
Goal optional
Add 2 more to compare.