Content

Bulk Subject Line Analyzer

Compare multiple subject lines side-by-side and find the best performer for your email campaigns.

How to use

  1. Enter multiple subject lines (one per line)
  2. Click 'Analyze All'
  3. Compare spam scores side-by-side
  4. Choose the subject line with the lowest risk

Frequently asked questions

How many subject lines can I compare?

You can compare up to 10 subject lines at once. This is perfect for A/B testing preparation or comparing variations of your campaign.

What factors affect the spam score?

We analyze: spam trigger words, punctuation patterns, capitalization, length, urgency language, and known phrases that correlate with spam.

Should I always choose the lowest score?

Not necessarily. Balance spam risk with engagement potential. A slightly higher score with compelling copy may outperform a 'safe' but boring subject line.