Category: O
Opt In
A process where by a user voluntarily agrees to start receiving email, usually commercial, about a topic of interest. It’s a critical part of CAN-SPAM regulations that the recipients of an e-mail intentionally opt-in.
OTS/H
Term used to describe the opportunity to see/hear (OTS/H) an advertisement. Online this is similar to a page view.
Opt Out
A process where by a user voluntarily agrees to stop receiving email, usually commercial, about a topic of interest.