How often need I verify my email

I have only one email address, and verified, but I still receive notify that my email need verify.

I do nothing to my email and I have verified the same email address 2 more time after I verified it.

What has happend?

Hi @sigsbee,

When mails to you bounce, GitHub will mark your mail address as undeliverable and require you to re-verify your address. This is to make sure there’s a valid mail address on file, so you can be reache for e.g. password resets or other important mails.