Commonly used email subject and body abbreviations

Some most commonly used email subject and body abbreviations.

No.	Abbreviations	Full Form	Description
1.	RE	Reply to	Followed by the subject line of a previous message indicates a reply to that message. This is not an abbreviation.
2.	Fw or FWD	Forwarded	The recipient is informed that the email was originally sent to someone else, and that person has in turn forwarded a copy of the email to him.
3.	FYI	For Your Information	The recipient is informed that he does not have to reply to this email.
4.	OT	Off Topic	Used within an email thread to indicate that this particular reply is about a different topic than the rest of the thread.
5.	EOM	End of Message	Used at the end of the subject when the entire content of the email is contained in the subject and the body remains empty.
6.	AB	Action By	Used with a time indicator to inform the recipient that the sender needs a task to be completed within a certain deadline, e.g. AB+2 meaning Action By 2 days.
7.	RB	Reply By	Used with a time indicator to inform the recipient that the sender needs a reply within a certain deadline.
8.	AR	Action Required	The recipient is informed that he is being given a task.
9.	FYA	For Your Action	The recipient is informed that she is being given a task. Can also mean For Your Amusement, For Your Attention, For Your Approval, For Your Assistance, For Your Awareness, For Your Authorization, or For Your Acknowledgement.
10.	FYSA	For Your Situational Awareness	The recipient is informed that this information may be important for other communications.
11.	FYFG	For Your Future Guidance	Used at the beginning of the subject, typically in corporate emails.
12.	FYG	For Your Guidance	Used in corporate emails in which management wants to inform personnel about a new procedure they should follow.
13.	LET	Leaving Early Today	Used in corporate emails to indicate that the sender will be leaving the office early.
14.	NLS	Not Life Safe	Used to indicate that the content may be shocking or grotesque, helping the recipient to avoid objectionable material.
15.	NMS	Not Mind Safe
16.	NMP	Not My Problem	Used in a reply to indicate that the previous email has been ignored.
17.	NWR	Not Work Related	Used in corporate emails to indicate that the content is not related to business and therefore that the recipient can ignore it if desired.
18.	OoO	Out of Office	Used in corporate emails to indicate that the sender will not be at work.
19.	PYR	Per Your Request	The recipient is informed that the sender is replying to a previous email in which he was given a task.
20.	QUE	Question	The recipient is informed that the sender wants an answer to this e-mail.
21.	RLB	Read Later	Used when sending personal or informational email to a business email address. Immediate response not required.
22.	RR	Reply Requested	The recipient is informed that he should reply to this email.
23.	Y/N	Yes/No	The recipient is informed that he should reply to this email with a simple yes or no answer.
24.	PNSFW	Probably Not Safe For Work	Used in corporate/school emails to indicate that the content may be sexually explicit or profane, helping the recipient to avoid objectionable material.
25.	PNFO	Probably Not For the Office
26.	NWS	Not Work Safe
27.	LSFW	Less Safe For Work
28.	NSFW	Not Safe For Work
29.	NSS	Not School Safe
30.	SSIA	Subject Says It All	Used when the entire content of the email is contained in the subject and the body remains empty.
31.	SIM	Subject Is Message
32.	NT	No Text
33.	NIM	No Internal Message
34.	NM	No Message
35.	NNTR	No Need To Respond	The recipient is informed that he does not have to reply to this email.
36.	NRN	No Reply Necessary OR No Reply Needed
37.	NRR	No Reply Requested OR No Reply Required
38.	SFW	Safe For Work	Used in corporate emails to indicate that although the subject or content may look as if it is sexually explicit or profane, it is in fact not.
39.	TSFW	Technically Safe For Work