I use a programme called MailWasher by Firetrust firetrust.com
It filters unwanted content ie you can view mail while it is still on the server and then decide what you want to download to your pc so unwanted mails never get to your system. You can also set your own filters and block the type of trash you mention, ie if you set a filter to block content with words such as tit, excuse me, it will block mails with this word.
This programme has worked fine for me over several years.

Hitbit