使用 gmail 发送邮件

## 先登录gmail邮箱设置 ## [https://support.google.com/mail/answer/7126229?p=BadCredentials&visit_id=1-636189999522884042-407575991&rd=2#cantsignin](https://support.google.com/mail/answer/7126229?p=BadCredentials&visit_id=1-636189999522884042-407575991&rd=2#cantsignin "在使用 IMAP 的其他电子邮件客户端中阅读 Gmail 邮件") ## 授予帐号访问权限 ## [https://www.google.com/accounts/DisplayUnlockCaptcha](https://www.google.com/accounts/DisplayUnlockCaptcha "授予帐号访问权限") ## 启用不够安全的应用的访问权限 ## [https://www.google.com/settings/security/lesssecureapps](https://www.google.com/settings/security/lesssecureapps "启用不够安全的应用的访问权限")