On 11/11/18 4:44 AM, Pete Biggs wrote: > it is generally better to use IMAP, and in that case what the mail client uses to store mail is not relevant since no mail is stored locally. Most IMAP clients that I've used treat IMAP as a synchronization protocol for their local mail store (cache), so I don't think it's technically true that no mail is stored locally. Though the storage format does matter less. I typically exclude the cache from backups, and the kind of excessive writes typical of mbox don't matter much when an entire disk is used by one user (me) rather than a large office. So, the benefits of maildir are minimized on desktop clients.