为POP3添加更丰富的认证支持

[agungor]

您仍然可以使用应用密码通过 POP3 身份验证 Gmail。这是一个最近的相关主题：

Connection to the POP3 server is failing with an authentication error. Please check your POP3 settings

I recommend turning on 2FA on the account and setting up an App Password for Discourse. The policy change is about the “allow less secure app access” option being deprecated. More info on this here: