OnBrief

Check any text against rules you write yourself.

Write your rules in plain English and paste a draft. OnBrief marks each rule as met or missed. Try it here on a sales email: the check is live, and you can edit the text or paste your own. Open a rule with an arrow to see which part of it was missed.

244 of 5,000 characters

Rule set: Cold outreach email

  • Addresses the recipient by name
  • Makes no promise of guaranteed results
  • Focuses on the recipient's problem rather than the sender's product

Your own rules work the same way

  1. 1

    Write your rules

    Plain English, as many as you need. Break a broad rule into sub-rules to pin down exactly what it asks for.

  2. 2

    Paste your text

    An email, a product page, a press release: whatever has to meet the brief.

  3. 3

    See what holds up

    A tick for every rule the text meets and a cross for every one it misses. Open a rule to see which part fell short.

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Checks on your own rules run on your TypeSafe API key.