Same issue with one of my providers.
Also of note is that it's not possible to change most IMAP account settings (such as login username) after the fact via pantheon-mail, as those option are grayed out and unchangeable from the settings => 'Accounts' user interface.
Same issue with one of my providers.
Also of note is that it's not possible to change most IMAP account settings (such as login username) after the fact via pantheon-mail, as those option are grayed out and unchangeable from the settings => 'Accounts' user interface.