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PRACTICAL SOFTWARE GUIDE

Grammarly brand tones and style rules: build an acceptance set before rollout

Keep emotional tone guidance separate from exact terminology, then test both on content that should and should not trigger feedback.

SOURCE-BASED ANALYSIS · NO HANDS-ON RATING

Use tones and style rules for different jobs

Grammarly describes brand tones as a profile that encourages or discourages detected tones. Style rules address the spelling, use and formatting of specific terms and phrases. A tone such as direct or reassuring should not be used to enforce a product name, and a replacement rule should not be expected to judge the emotional effect of a paragraph.

Write an acceptance set before configuration

Collect short, approved examples for common channels. Include a public service page, a support reply and an internal note. For each example, state the desired tone, any prohibited tone, the exact terms that matter and the websites where the feedback should appear.

Text fixtureTone expectationTerminology expectation
Apology after a delayAccountable, not defensiveUse the approved service name
Feature announcementConfident, not exaggeratedPreserve product casing
Internal incident noteDirect and factualDo not apply a public-facing slogan

These are hypothetical fixtures, not observations from a live Grammarly deployment.

Model terms with their real edge cases

When creating a style rule, include frequent misspellings, relevant plurals and an explanation that a writer can act on. Test a sentence that should trigger and another containing the same word in a different meaning. Avoid blanket replacement when context changes the correct term.

Scope feedback to the right surfaces

Grammarly documents website allowlists for both tone profiles and style rule sets. Use a domain-wide entry only when every associated surface has the same policy. A public-content profile may be inappropriate in an internal chat or support console. Record why each domain or subdomain is included.

  1. Approve tone and terminology sources.
  2. Create separate fixtures for tones and exact terms.
  3. Assign the profile and rule set to the intended groups.
  4. Configure website scope where appropriate.
  5. Test with a non-production account in each target surface.
  6. Review false positives before expanding the assignment.

Keep human review in the workflow

Feedback is a prompt for a writer, not an automatic statement of correctness. Preserve a documented exception path for quotations, legal language and intentionally different audiences. Review changes when a brand policy or product name changes.

Sources and verification

Official documentation checked on 2026-10-29. Worked examples are hypothetical planning exercises, not measured product benchmarks.

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