Yahoo IMAP and SMTP servers support authorization via the OAuth 2.0 protocol, which Postbox also supports. If you're receiving notifications about using a less secure application, or simply want to use the latest and greatest security protocol, try upgrading your Postbox Yahoo account to OAuth2. It's quick and easy to do!
Note: These instructions are only for Yahoo accounts that have already been set up within Postbox. If you are setting up a new Yahoo account, simply walk through our New Email Account Wizard and the correct settings will be configured for you.
- Within Postbox, navigate to Options | Preferences > Security > Passwords > Saved Passwords and click the "Show Passwords" button.
- Take a screenshot of your passwords, so you have them as a backup.
- Remove all of your Yahoo passwords from the Password Manager, then close the window.
- Navigate to Options | Preferences > Accounts. Select your Yahoo account and change Authentication to "OAuth2 (Yahoo)."
- Next, Navigate to Options | Preferences > Accounts > Outgoing Servers (bottom of the list on the left). Here you will want to edit the Yahoo server and change Authentication to "OAuth2 (Yahoo)."
- Once complete, restart Postbox, and it will authenticate.