This message may not have been sent by...

If a message doesn't have authentication data to confirm that it was sent through Gmail, we'll warn you in order to protect your information.

Why the warning message appears

You'll see this warning if a sender looks like, but we can't verify that the email is actually coming from that Gmail account.

This can happen if the sender:

  • Is sending emails from a fake Gmail account
  • Emailed you from a website (for example, to share a news article)
  • Sent an email that was automatically forwarded (for example, from your school/university account to your personal Gmail)

Option 1: The message seems suspicious

If you aren't sure that the message was sent by the Gmail address shown, follow these steps.

  1. In the warning message, click Report phishing.
  2. Do not provide any personal information or click any links in the email.

Option 2: The message is from a trusted sender

If you know that a sender is legitimate, you can remove the warning from their messages in the future.

Remove the warning from one sender at a time
  1. On your computer, open Gmail.
  2. Next to Search Search, click the down arrow Down Arrow.
  3. In the 'From' field, type the sender's email address.
  4. In the bottom right, click Create filter with this search.
  5. Tick Never send it to Spam.
  6. Click Create filter.
Remove the warning from forwarded messages

If you automatically forward messages from another email address, you can remove the warning from those messages.

  1. On your computer, open Gmail.
  2. At the top right, click Settings Settings and then Settings.
  3. At the top, click the Accounts and import or Accounts tab.
  4. In the 'Send email as' section, click Add another email address.
  5. Follow the instructions on your screen.

Instead of seeing the warning on messages that you've forwarded, you'll see something like " via".

Stop showing the warning to people who I email

You can stop this warning from appearing to your recipients. To get started, choose the way in which you send Gmail messages:

Phone or tablet

Make sure that you follow Gmail's setup guidelines for your mobile device.

"Send mail as" Yahoo! Mail, AOL, Outlook or other non-Google account

If you sign in to Gmail and use the "send mail as" feature to send from a non-Google account, make sure that you use Google's SMTP servers.

Outlook, Apple Mail or another mail service

Make sure that you set up your Gmail with IMAP or POP.

Work or school/university account

Contact your administrator to set up email authentication.

If these steps don't work, you can report the issue.

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