expire: When saving first message to expire mailbox, use the oldest message's save-time. This makes it easier to enable and test expire plugin. This also changes how expire dict is used: previously when all messages were expunged in a mailbox its entry was deleted in dict, but now its value is set to 0.
expire: When saving first message to expire mailbox, use the oldest message's save-time.
This makes it easier to enable and test expire plugin. This also changes how
expire dict is used: previously when all messages were expunged in a
mailbox its entry was deleted in dict, but now its value is set to 0.

Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot