Reads who the confirmation email of a double opt-in process comes from: its subject, the sender name and address, reply-to, CC and BCC, and the sender domain. It also names what may be chosen: senderEmailOptions are the addresses the account can send from, senderDomainOptions the domains it may pick between, empty when it has no choice. An empty stored sender or reply-to is reported as the account's own address; senderIdentity reports its current status and concrete choices. The body is not part of this answer -- it is get-opt-in-confirmation-email-content. A confirmation email is not a drag-and-drop document, so the block tools do not accept it; the answer carries bodyIsEditable false for that reason and an editUrl into the KlickTipp editor. Single opt-in processes still have this email stored; it is simply not sent. Change it with update-opt-in-confirmation-email.