This method should work for both Gmail as well as any IMAP client that you use.
(Note: This only works if you are using the new gmail interface.
)Mark All Spam as Read AutomaticallyOpen up Gmail and then tap the link to create a new filter.
you’re free to use the Test Search button to check that it shows just spam emails.
Now tap the Next Step button, and ignore the issue notification you get.
go for the checkbox for “Mark as read”, and then smack the Create Filter button.
Note that you could auto-delete all spam using this same filter, although I’m not recommending that.
At this point, all incoming spam will be automatically marked as read.
