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.
  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

  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 / 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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