Sample · illustrative only
Subject Line Tester sample ranking
Three A/B variants for a B2B nurture send. Scores are rule-based open potential — not measured opens.
LoudScale · Sample Report
PDF · 8 PAGESModel · subject-v2Variants · 3Near-dupes · none
Nurture sequence · week 2
3 variants ranked · optional preheader scored
Best open-potential score
Grade B74/100
Winner balances length, framework, and low spam dual risk. Runner-up is truncated on mobile.
Ranking
Illustrative order
- How growth teams cut CAC without more ad spend74
- Quick question about your Q3 pipeline61
- FREE!!! Pipeline secrets inside 🔥🔥🔥28
Limits
What ranking does not mean
- Not your list’s historical open rate.
- Not deliverability authentication.
- Body content scored separately in Spam Score Checker.
Top opportunities
Prioritized next actions
- 01
Prefer the how-to + outcome framing
Clear framework, safe length, low spam dual score.
→ Ship variant A; keep B as challenger
- 02
Shorten the curiosity variant for mobile
Preview truncation cuts the payoff word.
→ Front-load the outcome in first 35–40 chars
- 03
Discard stacked free + emoji spam
Lexicon and formatting rules collapse open potential.
→ Rewrite without hard-sell spam phrases
Limitations
- Rule-based open potential only.
- No ESP-specific placement prediction.
- Illustrative sample.
Illustrative sample · not measured open rates