How to re-apply Sieve filters to a Dovecot IMAP inbox
using the Pigeonhole sieve-filter tool
Sieve scripts are a great tool to filter incoming email messages before they are stored in your mailbox. The Dovecot IMAP
server supports Sieve scripts via the Pigeonhole plugin. However, those scripts are applied to your incoming emails before they are delivered to your inbox.
Sometimes, you may wish to filter messages that are already stored in your mailbox. For instance, when a bug
in a Sieve script caused many messages to be delivered incorrectly. As long as the Sieve…