I don't know many people that send large files via e-mail, most probably because there aren't many good services that offer that feature but that has been changing with Pando - an online service that lets users send/receive large e-mail attachments with ease, even if the files have 500MB or 750MB, with the limit being 1GB. The solution they found to offer this feature was useing peer-to-peer networks that work in coordination with the e-mail + attachments so there won't be no email bounce backs.

Pando was launched earlier this year, it already has 1.8 million downloads and has transferred close to 40 terabytes of data, good numbers for a good service like this. One of the situations I can imagine is the illegal transfers that can occur on Pando, by knowing that most of the data is video, just think of the series/movies/videoclips that have been shared over this year.

Pando has released some new plug-ins that made a good improvement when comparing with the first version:

In the first version, you installed the software. Then you opened the application and typed in an e-mail address - we had a standalone product. Now you can go to Yahoo e-mail or Outlook or Gmail, hit attach and go

Via CNet