This free tester tells you if your subject line breaks trust before the open.

We check honesty, length and pressure — the things that get you archived.

[FAIL]29 characters · 4 words
  • Fake reply or forwardhigh
    Re:

    → Never fake a thread. Use a plain, honest subject.

  • Pressure or false urgencymedium
    !!

    → Remove artificial deadlines; real value does not expire on Friday.

  • Pressure or false urgencymedium
    URGENT

    → Remove artificial deadlines; real value does not expire on Friday.

  • Shouting in capsmedium
    URGENT

    → Use normal case.

  • Overused openerlow
    quick question

    → Name the actual topic instead.

Quick rule-based checks, run in your browser. The MailDignity API reads full context with AI and writes rewrites.

A fake "Re:" gets the open and loses the person.

Tricks raise open rates and destroy trust. The recipient remembers who faked a thread.

Honest, specific subjects under 40 characters perform reliably.

Frequently asked questions.

Is "Re:" ever acceptable?

Only in a real reply thread.

Is "Quick question" bad?

Overused, but not dishonest. A specific topic is better.

Ideal length?

Under 40 characters, 2–6 words.

Free?

Yes.

Check every email before it sends.

Same standard, with AI context and rewrites. One API call from Clay, Make, n8n or Zapier.

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