P.S. stands for postscript. It is an afterthought added at the end of a letter. It comes from the Latin word “post scriptum” which means “written after”. A postscript can be as short as a sentence or longer like a paragraph.
A letter might also include a P.P.S. (Post-Postscript): An additional message written after a P.S. has already been added.

P.S. Example:
Hello Owl,
I love all the information you provide on your website. You have amazing answers to questions on a wide variety of topics It helps me find out and learn so much! You are so smart!
Sincerely,
Your ReadersP.S. Don’t stop doing what you’re doing!
P.P.S. Can’t wait to read more!
The P.S. in emails is used the same way as the P.S. in a letter, it goes after the signature.
Postscript History
The use of postscripts were more popular in older times when letters were handwritten or typed on a typewriter. The letters could not be edited to add additional information, you would have to write the whole thing over again!
Now, they are used more often in a way to highlight important information or put an emphasis on things that you would like the reader to know.
P.S. I love you!
P.S. Don’t forget to bring your passport!
Other PS Abbreviations
In text, emails, letters, social media, etc, P.S. will more than likely stand for a postscript. However, PS is also an abbreviation for a multitude of other words such as:
- PlayStation
- Power supply
- Prescription
- Phosphatidylserine
- Program Specialist