End of message

[1] The subject of an e-mail message may contain such an abbreviation to signify that all content is in the subject line so that the message itself does not need to be opened (e.g., "No classes Monday (EOM)" or "Midterm delayed ").

This practice can save the time of the receiver and has been recommended to increase productivity.

[1][2] EOM can also be used in conjunction with no reply necessary, or NRN, to signify that the sender does not require (or would prefer not to receive) a response (e.g., "Campaign has launched (EOM/NRN)") or reply requested or RR to signify that the sender wishes a response (e.g., "Got a minute?

It is often a snide way for commenters to imply that their message is so perfect that there can be no logical response to it.

In teleprinter systems, the sequence "NNNN", on a line by itself, is an end of message indicator.