I don't think I can think of a movie that revolved more around getting your email. The two main characters played by Tom Hanks and Meg Ryan found each other via an Internet chat room, and struck up a romantic friendship. AOL features prominently here (hence the title of the movie, "you've got mail" - that's the classic AOL email alert tone). My favorite part is the end in the spring garden - but I won't ruin it for you.
Check out You've Got Mail for yourself.