[tehwalrus]

Or, whenever you get an unexpected email, go retrieve your credentials from your password manager, log in via the main page, and check you can see the message/problem it's referring to.

(Some of us use the dots to trick some sites into using a nonstandard email, rather like the username+netflix@gmail trick, so you can see who sold your email to the viagra trolls. Some sites reject + in emails, making the dots v handy.)