Email Settings for Google Gmail and GSuite


Postbox and Google/Gmail accounts work perfectly together! Simply follow these steps to verify your settings:

1) At Google – Verify IMAP Settings

  1. In your browser, sign in to your Google/Gmail account.
  2. Click the gear icon in the upper right-hand corner and select Settings.
  3. Click the Forwarding and POP/IMAP tab. (Note: If you do not see a tab that contains "POP/IMAP," then these protocols have not been enabled for this account by the IT administrator.)
  4. In the IMAP Access area, ensure that Enable IMAP is selected.
  5. Click the Save Changes button.


2) At Google – Verify Security Settings

  1. In your Google/Gmail account, click on your profile picture in the upper-right, then click the My Account button
  2. Click Sign-in & Security
  3. If 2-Step Verification is set to OFF, then scroll down to Apps with account access and set Allow less secure apps to OFF.

3) In Postbox – Remove Old Passwords (if needed)

If you are new to Postbox, this step shouldn't be needed, but if you've previously set up, or attempted to set up, an account we recommend this quick step to ensure there are no older passwords that are conflicting.

  1. Go to Options (Windows) or Preferences (macOS) > Security > Passwords > Saved Passwords
  2. Delete any passwords that may exist for the account that you are trying to set up

4) In Postbox – Ensure that Cookies are enabled

Navigate to Preferences/Options > Privacy and ensure that the setting Accept cookies from sites is enabled.

5) In Postbox – Set Up Your Account and Verify Settings

To set up a new account, go to the File menu and select New > Mail Account, then enter your credentials and verify the settings below.

To verify an existing account, go to Preferences (macOS) or Options (Windows) > Accounts, then verify the following settings:

Incoming Server

  • Account Type: IMAP
  • Server Name:
  • Port: 993
  • User Name: or
  • Connection Security: SSL/TLS
  • Authentication: OAuth2

Outgoing Server

  • Server Name:
  • Port: 465
  • User Name: or
  • Connection Security: SSL/TLS
  • Authentication: OAuth2

Helpful links at Google

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