17 Jun
                
                    2019
                
            
            
                17 Jun
                
                '19
                
            
            
            
        
    
                9:41 p.m.
            
        On Jun 17, 2019, at 12:35 PM, Odhiambo Washington via dovecot <dovecot@dovecot.org> wrote:
Is there a way to mark all mails older that today as "Read" in all folders?
Yes, via the doveadm flags command
man doveadm-flags for more info
Something like:
doveadm flags add -u username ‘\seen' mailbox “*” SENTBEFORE 17-Jun-2019
(Not tested, but along those lines, I can’t find real world examples outside of man pages)
-- Everything you read on the Internet is false -- Glenn Fleishman