Google Less Secure Apps Thunderbird. Has some useful comments such as oauth is more secure because it only need to decrypt the keyring (i.e. Select the setting for less secure apps:

And the message says allow less secure apps:. Select the setting for less secure apps: Thunderbird can be set up to work seamlessly with google's gmail.
To review and adjust your security settings and get recommendations to help you keep your account secure, sign in to your account.
My previous adventure with gmail an pop3 introduced me to the term less secure apps. is thunderbird development planning interested in addressing this? Go to allow less secure apps and choose “allow” to let less secure apps access your google account. Is google trying to say that standard protocols like imap, smtp and pop3 are less secure ways to access a mailbox? To turn off less secure apps: