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Check Gmail through other email platforms

Set up IMAP and change your SMTP settings to read Gmail messages in other email clients, such as Microsoft Outlook and Apple Mail. When you use IMAP, you can read your Gmail messages on multiple devices, and messages are synced in real time. You can also read Gmail messages using POP.

Important: To avoid temporarily locking yourself out of your account, make sure you don't exceed 2,500 MB per day for IMAP downloads and 500 MB per day for IMAP uploads. If you're setting up a single IMAP account on multiple computers, try taking a break between each setup.

Step 1: Check that IMAP is turned on

  1. On your computer, open Gmail.
  2. In the top right, click Settings Settings and then See all  settings.
  3. Click on the Forwarding and POP/IMAP tab.
  4. In the 'IMAP access' section, select Enable IMAP.
  5. Click Save changes.

Step 2: Change SMTP & other settings in your email client

Use the table below to update your client with the correct information. For help with updating your settings, search your email client's help centre for instructions on setting up IMAP.

Incoming mail (IMAP) server

Requires SSL: Yes

Port: 993

Outgoing mail (SMTP) server

Requires SSL: Yes

Requires TLS: Yes (if available)

Requires Authentication: Yes

Port for SSL: 465

Port for TLS/STARTTLS: 587

Full name or display name Your name
Account name, username or email address Your full email address
Password Your Gmail password

Troubleshoot problems

I can't sign in to my email client

Important: If you can't sign in to your email client, you may see one of these errors:

  • 'Username and password not accepted'
  • 'Invalid credentials'
  • You're asked to enter your username and password over and over

Step 1: Check your password

If you have these problems or can't sign in, first check to make sure that you're using the right password.

Step 2: Try these troubleshooting steps

  • Update your email client to the latest version.
  • Use an app password: If you use 2-Step Verification, try signing in with an app password.
    • Important: If you sign in with OAuth, use your regular Google password.
  • Allow less secure apps: If you don't use 2-Step Verification, you may need to allow less secure apps to access your account.
  • If you recently changed your Gmail password, you might need to re-enter your Gmail account information or completely repeat your Gmail account set-up on your other email client.
  • The email client's sign-in method might be insecure. Try signing in directly on the Gmail app.
  • Make sure that your email app isn't set to check for new emails too frequently. If your mail app checks for new messages more than once every 10 minutes, the app's access to your account could be blocked.
'Too many simultaneous connections' error

You can only use 15 IMAP connections per account. If you have a lot of email clients receiving messages from Gmail at the same time, you may see the 'Too many simultaneous connections' error.

If you use multiple email clients or devices for the same Gmail account, try closing or signing out of some.

Security certificate CN error

Try the options below if you see this error: ‘The server you are connected to is using a security certificate that could not be verified. The certificate's CN name does not match the passed value.’

  • Make sure that you've set up your email client for IMAP and not POP.
  • Check your Incoming Server setting to make sure that it says and not
My email client is crashing, or emails are taking too long to download

You might be downloading too many emails at one time.

To fix this:

  • Update your IMAP settings so that you aren't syncing certain folders.
  • Remove your Gmail account from your email client, then try adding it again.
  • In your Gmail IMAP settings, set IMAP to only sync folders with 10,000 emails or fewer.

Related resources

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