After I had migrated to 10.12.1, I started facing issues in creating new mailboxes in my mail account in the official Mail app. Earlier, I simply used to create a new mailbox and it used to appear immediately on the left-hand side along with other mailboxes. But now, when I create a mailbox, it asks me the Location and Name, and then nothing happens. Nowhere the mailbox is and I have a tough time to find a solution of this.
I tried creating a new folder in my email account by logging into the web interface (Squirrelmail), and it showed up as a new mailbox, but the reverse is not working.
Is this a known issue in 10.12.1? Any workaround / fix for this? I am having my own domain and using IMAP to configure the same in Mail app.