Careers sends an email every three months that says it "noticed you haven't updated your profile in a while. Have you changed jobs, blah blah blah?"
This is way too spammy of a reminder. As an employer, I summarily dispose of resumes where the candidate has been at a new job every year, let alone every three months. Once a year would be the minimum I think is suitable for this kind of reminder.
I clicked the only sensible option, which was "opt out," but from the resulting page, it's not clear if that just stopped that one type of emails, or everything on careers, or everything from all stackexchange sites. I only want to stop that one type of unnecessary reminder.