Technology / Email / Double Opt-In: A process that requires new list joiners to take an action (such as clicking on an emailed link to a personal confirmation page) in order to confirm that they do want to be on the list. Sometimes interpreted incorrectly by some email broadcast vendors to mean a new subscriber who does not opt-out of or bounce a welcome message.
Double Verb Synonyms: twofold, paired, coupled, duplicate(d), doubled
Double Adjective Synonyms: folded or doubled or bent over, overlapped, two-ply
Technology / Email / Verified Opt-In: Formerly known as double opt-in. Requires secondary confirmation from an email address to confirm intended registration to receive email. MORE
Business / Finance / Double Up: A term used in technical analysis to refer to the rise of a stock's price, a drop, and then a rise back to the same level as the original rise. MORE