I just got a mail requesting re-verification of my email address (for ankiweb, not the forum).
related post: Email verification
This seems to be related to the “annual verification” as specified on the FAQ, but it’s not very clear.
I really don’t like and I won’t start to click links on mails that I have not requested myself. If you need to re-verify my mail, please offer an option in the account on the website, or in the app.