Purge inbox email by age?

[keat63]

The business owner has retired, but still likes to see a copy of all cart orders, so I setup a forwarder, to a separate mailbox for him.
This probably has about 30 emails per day, so doesn't take long to start to fill up.
Is there any filter I could setup to purge emails from this mailbox when they become 30 days old ?

 

[Infopro]

Horde has options for purging trash. He'd have to delete the messages after reading to put them in the trash first.
There is this very old thread you might get something useful from:
Auto deletion of mails in a mailbox based on age