No — POP3 is not supported for Gmail accounts in BlueMail. Add your Gmail account with the standard Google sign-in instead.
Add your Gmail account this way instead
- Start adding the account and enter your Google Account information.
- Tap Allow to grant the permissions BlueMail needs.
The sign-in opens in a browser on your device, because Google no longer allows apps to sign you in inside their own built-in browser window. If it fails to open or does not complete, see Error When Adding a Gmail Account. Full steps are in Adding a Gmail Account.