In case you don't know what we mean or you never bothered to check in the last year:
We regularly write you emails. Not very often, but often enough. Sometimes those emails contain simple security checks, sometimes they are quite important. With our recently introduced password reset feature we really do need a mail address of you.
While you are at it, you may check if you have ever set a sufficient password for your account. In case you didn’t go to the Password section and set one.