How to block or mark suspicious email as spam


You received a suspicious email and would like to block the sender or mark it as spam.


  • Gmail
  • Phishing


To mark emails as spam:
  1. On your computer, open Gmail.
  2. Select one or more emails.
  3. Click Report spam.
To block the sender:
  1. In your Admin console.
  2. Go to Menu > Apps > Google Workspace > Gmail > Spam, Phishing and Malware.

    * Requires having the Gmail Settings administrator privilege.

  3. To apply the setting to everyone, leave the top organizational unit selected. Otherwise, select a child organizational unit.

  4. Scroll to Blocked senders and choose an option:

    • To edit an existing setting, click Edit next to the rule. The Edit setting box opens.

    • For a new blocked senders setting, click Add another rule. The Add setting box opens.

  5. Enter a description for the blocked senders setting.

  6. Click an option:

    • Use existing list: Select one or more address lists in the Select address lists box. Then, go directly to Step 2: (Optional) Edit the default reject notice.

    • Create or edit list: The Manage address lists window opens in a new browser tab.

  7. In the Manage address lists window:

    1. Click Add Blocked list.

    2. Enter a name for the new list.

    3. Click Add Address to add email addresses or domain names to the list. 

    4. After you've added all addresses and domains, click Save.

  8. Return to the Add setting box on the original browser tab.

  9. (Optional) To add more address lists to the blocked sender setting, repeat Steps 6–8.



Email had authentication, but the content was suspicious, and the name doesn't match the email address, possible impersonation of the sender's name.