Create Subfolder Under Inbox in Mail

All of the above solutions don't seem to work very well. In Sierra, all my mailboxes disappeared as one user stated. A simple restart of Mail brought everything back.

The method I use (and not everyone can do this) is to add the mailbox to another PC or Mac-based Outlook Exchange server account that is the same as your Mac Mail account. Outlook allows adding folders under the Inbox b/c it creates a new sub account under its own Inbox. That will automatically populate the new mailbox under the Inbox on the Mac based Exchange account. I do this almost everywhere, as the Exchange server is a good place to keep the backup of your email. Well, it's a lot better system than I could ever create, anyway. It's amazingly fast to populate your entire email environment (providing the PC or Mac has enough space).

What my problem is, earlier I created sub folders in inbox as I preferred but now it's not possible and always pop up a massage box saying server issue!!!! How can I fix this???? Please help, thanks in advance.

Not to doubt you, but did you do this with the Inbox of a POP account?

Ernie

No, this was performed on an IMAP account. POP3 doesn't traditionally deal with additional folders so if you're using POP3 the point is moot.

You are a God. I've been trying to solve this for years.