Meaning No need to open
Type Acronym
Rank ★ ★ ★  Common
Usage Online Only (chat, messaging, e-mail)
Comments NNTO may be used in e-mail communication to indicate that a message doesn't need to be opened. This usually means the subject of the message is clear enough, e.g. "Thanks, I received the document. NNTO."
Updated October 29, 2009