Problem
You are unable to add another Google Workspace account to the setting Check mail from other accounts when using an account without 2SV due to the error: Server denied POP3 access to given username and password.
Environment
- Gmail web interface
Solution
- Open a new incognito window and go to Google Mail.
- Sign in to the account you are trying to add in Check mail from other accounts.
- Go to Less secure apps access and make sure Less secure apps is enabled.
- In the same incognito window, open a new tab.
- Go to Display Unlock Captcha and click Continue.
- Try again to add the account in Check mail from other account settings.
- Make sure you are using the following settings:
- Username: Full email address of the account you are trying to add Password: Password of the account you are trying to add
- POP Server: pop.gmail.com
- Port: 995
- Leave a copy of the retrieved message on the server: Unchecked
- Always use a secure connection (SSL) when retrieving mail: Checked
Cause
This is caused due to Less secure apps being turned off when an account does not have 2SV.