This question already has an answer here:
I was wondering if SO could have a mailing feature. Yes it is not a social site, but then there are times, when a piece of code is just too large, or when a portion of code alone may not be shared, because its interlinked with other classes. It really becomes easy sharing a file to a single user or may b multiple through mails instead of dumping code on pastebin. I don't know if thats a valid reason really to have a mail feature, but it's worth it. What say ?