All Use Cases
Test Email Subject Lines
Generate, score, and rewrite subject lines from a single brief. Every option fits character limits and matches the email it ships with.
How does it work?
The Subject Line tool produces ranked subject and preview text combinations from an email brief.
- Provide the email — Body copy or short summary
- Pick the angle mix — Outcome, curiosity, urgency, contrarian, or question
- Set length — Mobile-safe character count or custom limit
- Choose tone — From your Brand Portal
- Specify variant count — How many subject and preview pairs to generate
Output is ranked subject-and-preview pairs with the angle, predicted match to the email body, and the angles deliberately left out.
Who uses Test Email Subject Lines?
Email Marketers use it as a final pass before scheduling sends.
Lifecycle Marketers use it to run subject line tests across recurring sends.
Content Marketers use it for newsletter and blog announcement emails.
How does Test Email Subject Lines interact with the GenuineAI platform?
- Knowledge Base — Pulls past best-performing subject lines and audience profiles
- Brand Portal — Applies voice, banned words, and capitalization rules
- Wildcards — Angle types and tone profiles reused across email Tools