The electronic (email) equivalent of postal "registered mail", providing senders with a register enabling the location (delivery status and reading disposition) of their emails to be tracked.

plural of branch register

(US) The official journal of the federal government of the United States that contains most routine publications and public notices of government agencies.

plural of registered mail

plural of electoral register

(computing) A register designed to subject data to a shift.

Synonym of baby talk

A special type of mail that provides more control than regular mail.

plural of register ton

plural of nonconformist register