> Making the sqlite db the primary would mean that unless there was constant synchronisation I would be missing emails in the other clients. This is a perfect

> Making the sqlite db the primary would mean that unless there was constant synchronisation I would be missing emails in the other clients. This is a perfect example of complicating what should be a simple thing to support a very, very niche use case. Thunderbird should just use sqlite so all normal operations including search are fast across all platforms, and if you have a use case like wanting to synchronize with other mail clients using maildir, then write a plugin that will duplicate the sqlite db to a user-specified maildir.