Can I configure exim to deliver new mail to Maildir cur/ instead of new/?

I would like to set up an Exim4 delivery driver or perhaps a .forward/filter file that delivers certain mail straight to a MailDir's "cur" dir, instead of the "new" directory.

Is this possible?

Background/reason/idea: I am trying to implement a way for certain emails to avoid being "pushed". This way unimportant (as determined by a filter rule, e.g. from a list) emails can get delivered to an inbox without the staff member getting a push notification. I believe that files in the cur/ directory will only arrive on a normal poll, and not be picked up by typical push implementations.

Solution 1:

If you can implement rules in sieve, which both Courier and Dovecot support, you can create a rule using the Seen flag, which is how a message is flagged after it is moved from the new to the cur directory.