If guests are displayed with the mailing status "to be verified email addresses" in the cockpit after a bulk mailing, it means the mailing could not be delivered to these addresses.

These email addresses should be checked to correct any syntax errors or outdated addresses. A bulk mailing can then be triggered only to corrected addresses, as Invitario can identify them. To do this, open the mailing page of the desired mailing, select the checkbox "only send to guests with new/changed email address" in the mailing settings, and start the mailing again.