4 merge requests!30Issue #2971991 by amykhailova, code-drupal: "Cc" Recipient not receiving email...,!25Issue #2979620 by Baik Ho: 400 Bad Request - Handle exception returned from...,!11Issue #3222819 by lambic, Perignon: Allow sending in behalf of subusers,!10Issue #2848810 by Perignon: Notice: Account for Reply-To being all lower case....