Turn off notifications for old unread emails and only keep for new emails in gmail I'm using Gmail on Android 6.0 and almost every time gmail fetch new emails I have notification about old unread emails, each time I got new email the number get bigger (40 right now on my not gmail email that I've got spam sent).

I don't want to click on each email to maker it as read.

Is there a way to turn off notifications for old unread emails and only keep the ones that are for new emails.
As confirmed , the solution that worked is posted below

You can try automation.  I prefer Macrodroid, being easy to learn and free (upto 5 macros)

Create a macro 

Trigger: Notification &rarr; Notification received  &rarr; Select Application  &rarr; Gmail  &rarr; Text content contains  &rarr; Enter here the text you see on the unread notifications

Actions: 


Clear Notifications  &rarr; Clear all
Optional if you don't want notification sound Volume Change  &rarr; Set notification on slider scale to zero


Constraints​ : Leave blank