I was able to fix it with the following configuration (add subfolder style to the store): MaildirStore personal-local Path ~/Maildir/personal/ Inbox ~/Maildir/personal/Inbox Flatten . Subfolders Verbatim All I propose is that we update the documentation, from this: SubFolders Verbatim|Maildir++|Legacy The on-disk folder naming style used for hierarchical mailboxes. This option has no effect when Flatten is used. To this: SubFolders Verbatim|Maildir++|Legacy The on-disk folder naming style used for...
Ah, I see, thanks for clearing up my confusion. It seems there is no restriction on naming convention for IMAP folders on dot character for hidden files, so technically mbsync should look there, and I was mistaken about hidden folders. However, it still seems strange to me that it tries to look in a subdirectory for a Maildir that is using Flatten. It would have been clearer to me if the documentation specified that mbsync would look in subdirectories despite setting Flatten (even when it doesn't...
Subfolders style required when for subfolders in hidden folders, despite use of `Flatten`