How to Enable Protection From Unusual File Types in Gmail Attachments

Quick and easy-to-follow guide for Google Workspace administrators

Enable this security setting to protect all users from uncommon file types in attachments designed to infect you with malware and harm your data and devices.

How to enable Google Workspace protection from unusual attachments step-by-step with images

Step 1

How To Enable Google Workspace Protection From Unusual File Types In Gmail Attachments - Step 1

In the Admin console at https://admin.google.com, click the Apps icon.

Step 2

How To Enable Google Workspace Protection From Unusual File Types In Gmail Attachments - Step 2

Select Google Workspace.

Step 3

How To Enable Google Workspace Protection From Unusual File Types In Gmail Attachments - Step 3

Click Gmail. Make sure not to check the box to the left; just click the service.

Step 4

How To Enable Google Workspace Protection From Unusual File Types In Gmail Attachments - Step 4

Select Safety.

Step 5

Click Attachments.

Step 6

Check Protect against anomalous attachment types in emails.

Under Choose an action, decide what to do with emails caught by this rule:

  • ​Keep email in inbox and show warning (default)
  • Move email to spam
  • Quarantine

If you select Quarantine, click Choose a quarantine to select a quarantine to use for this. See how to create and access quarantines here.

You can whitelist file types if needed under Whitelist the following uncommon filetypes. They should be listed without a period, followed by a space and a comma, like this:

jpg, gif, pdf (except these file types are not uncommon)

After updating, click SAVE at the bottom. Changes may require up to 24 hours to take effect.

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