Short for "post script" meaning after writing. Some thing that is added after the main text.
post script
could you send certified ps form 3800 and ps form 3811 mail to me
snail mail no more
dmd Ps
It stands for Professional Service.
PS stands for Post Script. Usually an addition to a note or letter.
Pending Sale
Translation: posdata
'mail' is in Dutch 'post' I think that you mean mail in letters and that sort of stuff. Because an e-mail is also e-mail in Dutch but they also say 'mail' when they mean e-mail.
Mind your Ps and Qs means to use good manners.
Electronic Mail
I don't have your mail.