I have seen people using P.S. at the bottom of emails for something related to the email content. Whenever I see that, I think that the email can easily be edited and rewritten without much effort. Does it make sense to use P.S. these days while drafting an email?
The answer to the question Is it appropriate to add a postscript to an email? does not make it clear when not to use P.S. The replier only highlights the situations when they use P.S.
I have searched the internet and found a wikipedia article on postscripts/post-scriptum, which actually supports my thought. In the comment section, I have explicitly stated that a postscript is an afterthought and should only be used for that in formal conversations. However, an email can be edited. So, do we really need to write P.S. in an email?
Most of the answers here are informal and state that you can end a note with something that doesn't fit in the content of an email. I believe that in informal communication, grammar and word choice may not matter as much because the other person has some idea of what is going on.