Shadow AI · Tool risk profile

Grammarly.

by Grammarly · writing · Verified April 19, 2026

Vendor site

Base risk

3.5/ 5

LowMediumHighCritical

Grammarly’s browser extension reads everything typed in supported text fields, including emails, CRM notes, and customer-support replies — making it one of the highest-volume data flows on most corporate endpoints. Grammarly Business adds SSO, audit logs, and a no-training stance; consumer Free and Premium do not. The key control is replacing personal accounts with managed Business accounts, not "blocking Grammarly".

Tier comparison

Same logo. Very different risks.

  • Free

    high
    Trains on inputs
    Yes
    Retention
    unlimited days
    SSO
    No
    Admin controls
    No

  • Paid · consumer

    high
    Trains on inputs
    Yes
    Retention
    unlimited days
    SSO
    No
    Admin controls
    No

  • Enterprise · team

    medium
    Trains on inputs
    No
    Retention
    30 days
    SSO
    Yes
    Admin controls
    Yes

FAQ

Questions teams ask about Grammarly.

Does Grammarly read my emails?

The extension intercepts text in supported fields; consumer tiers may store this data. Business tier processes it without storage or training.

How do we audit Grammarly use?

Check expense reports for personal Premium charges, look for grammarly.com sessions in your CASB, and audit installed browser extensions.

Audit your shadow AI

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alongside tools IT doesn’t know about?

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