Settings mail app

Hi Guido,

Should be possible:

'app.mail.accounts.default' => [
  'email' => '%USERID%@yourdomain.at'',
  'imapHost' => 'imap.yourserver.com',
  'imapPort' => 993,
  'imapUser' => '%USERID%@yourdomain.at',
  'imapSslMode' => 'ssl',
  'smtpHost' => 'smtp.yourserver.com',
  'smtpPort' => 486,
  'smtpUser' => '%USERID%@yourdomain.at'',
  'smtpSslMode' => 'none',
],

Reference: https://github.com/nextcloud/mail/pull/28