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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.

Test your linesMethodology

LoudScale report

Nurture sequence · week 2

3 variants ranked · optional preheader scored

  • Model · subject-v2
  • Variants · 3
  • Near-dupes · none

Best open-potential score

74/100

Grade B

Winner balances length, framework, and low spam dual risk. Runner-up is truncated on mobile.

Illustrative order

  • How growth teams cut CAC without more ad spend74
  • Quick question about your Q3 pipeline61
  • FREE!!! Pipeline secrets inside 🔥🔥🔥28

What ranking does not mean

  • Not your list’s historical open rate.
  • Not deliverability authentication.
  • Body content scored separately in Spam Score Checker.

What to do first

  1. 01

    Prefer the how-to + outcome framing

    Clear framework, safe length, low spam dual score.

    Ship variant A; keep B as challenger

  2. 02

    Shorten the curiosity variant for mobile

    Preview truncation cuts the payoff word.

    Front-load the outcome in first 35–40 chars

  3. 03

    Discard stacked free + emoji spam

    Lexicon and formatting rules collapse open potential.

    Rewrite without hard-sell spam phrases

What this report does not measure

  • Rule-based open potential only.
  • No ESP-specific placement prediction.
  • Illustrative sample.