Toggle automated emails

I don’t want to go offtopic in the other thread, so I open yet another question in a new one. @peterg wrote, and I kinda share his opinion:

Which leads me to my question: How and where can I toggle any kind of automated mails? We don’t need any energy points, nor birthday emails, and I have no clue what else I am going to find over time.

The mandatory DOB field in employees is not an issue here, that’s something we will fill in. The emails are, though.