I'm including List-Unsubscribe (RFC 2369) in the header of my emails (for my app notifications), but in hotmail/outlook doesn't work.
I recently read that hotmail/outlook only accept the mailto URL for List-Unsubscribe, but it does not do anything anyway.
Is hotmail/outlook working with List-Unsubscribe or not?
In what hotmail/outlook client works?
Is there documentation?