I am using an IMAP email account on several OS X and iOS devices.
On one single OS X machine I have a greyed-out Drafts folder with some strange subfolders:
This is only happening on this particular machine (El Capitan). On other Macs with the same system I see, as expected:
Is there a way to refresh the IMAP folders?
Edit
The subfolders shown by Drafts are not empty: they are a subset of the folders I have on the top level (i.e., Sent Messages).
The option to choose a folder as Drafts is not present:
Best Answer
The folders that should not be there are empty, correct? Select the Drafts-Home-Drafts mailbox, in menu point Mailbox, choose "use this mailbox as" and select "Drafts". Do such also for the mailboxes under Drafts-Home that you want gone, i.e. "Drafts-Home-Deleted Messages" to Deleted Messages, and so on. Then do it for "Drafts-Home". Just deleting them might not work.