I use a custom Drupal Webform for contacts to join groups. This happens within a restricted environment, the user is logged in and managing his/her own profile behind a password. I don't want any e-mail to be sent.
When a group is marked as 'mailing list', CiviCRM sends out a confirmation mail. If a group is marked both 'mailing list' and 'access control', no e-mail is sent.
I've unchecked 'Enable Double Opt-in for Profile Group(s) field ' in the CiviMail component. Doesn't seem to make a difference (this is not a 'profile groups checkbox' as per the description there i think - its a webform).
So I'm about to check the 'access control' for a dozen of groups, only to disable the e-mail confirmation. What am I doing wrong ? :-)