Mailgun 大量用户流失

[codinghorror (Jeff Atwood)]

当然，当用户在 Discourse 中创建账户时，电子邮件在那一刻肯定已被验证有效，因为在 Discourse 中，电子邮件等同于身份。

但电子邮件账户可能会随时间停止工作，或者在用户迁移场景中，用户虽能登录，却已无法控制其旧邮箱地址等。

因此，统计邮件退信（如果已配置）的过程在这些情况下尤为重要：

邮件退信处理指南

Where do I find details about bounced emails in Discourse?

I can’t find anywhere in Discourse admin panel where I can find full details of bounced emails – to read the content and find out the bouncing reason. I don’t seem to have those saved in my email account (automatically deleted by Discourse?)

Notify users of bouncing email

I’ve been manually going through bouncing emails for a while and PM-ed the affected users to ask them to check their email settings. Without fail, they did not realise they were using an old email address and updated their profile. It would be useful if Discourse could automatically send these users such a message.