Yahoo has invades my persaonal mail by by placing spam in my, inbox
I have just spent 15 minutes trying to delete the Trivago **** from my inbox, and guess what Trivago site does not allow me to do so..... So Yahoo can join Vodaphone in mass exodus to other providers, it is not that hard.
Contact the companies direct. I've emailed three saying I resent their spam. So far two of the three ads haven't reappeared.