Obvious implementation: use IMAP to create a folder, snooze-$timestamp. Move messages there. Every so often, check the snooze-$timestamp folders and present eve

Obvious implementation: use IMAP to create a folder, snooze-$timestamp. Move messages there. Every so often, check the snooze-$timestamp folders and present every one where the timestampt has expired as part of the unread group. Delete empty folders.