The Email Marketing Glossary - the letter D
De-duplication (de-duping)
The process of de-duplication involves comparing sets of data, typically personal details, and stripping out identical sets.
Delivery Tracking
The number of delivered messages by format. Plus the number of messages that could not be delivered by type (bounce backs, invalid address, and delivery error).
Demographics
Demographics are specific data describing individual characteristics about a certain audience.
Double Opt-in
To double opt-in a subscriber volunteers to become a member or subscriber to receive email messages and/or commercial advertisements by entering their email address. A message is emailed to them for confirmation ensuring the email address submitted is truly owned by the initiating subject.
Dynamic Content
The ability of an email marketing solution - either outsourced or in-house - to deploy highly targeted messages to very numerous yet small customer segments based on business rules associated with its database.