Bug描述: 格式为xx.abcd@example.org的邮箱是微软账号的辅助邮箱之一。试图验证辅助邮箱地址，输入地址后显示 “That doesn’t match the alternate email associated with your account. The correct email starts with “xx”.

Bug原因: 前端程序员太弱智。

解决方案: 把第三个字符.换成URL编码的%2E即可。

类似问题:

In my case, I only have two letters as an email name. For example, if my alternative email is`ab@xyz.org: Verify your email - We will send a verification code to ab*****@XYZ.org. To verify that this is your email address, enter it below. When I key in ab@xyz.org` , it always shows: That doesn’t match the alternate email associated with your account. The correct email starts with “ab”.

解决方案: 目前无解。

参考文献: Alternate Email not recognized for Verification code