P2P file sharing company, Pando has released a plugin for Microsoft Outlook which allows you to send large files from within Outlook itself. The good thing about this software is that if the email attachment is within your service provider’s limit, it would be sent through regular email. But if the file is larger than the limit specified, then Pando will attach a small .pando file in its place. The recipient can then open the .pando attachment to start a direct P2P transfer of the large file attached.

Pando for Outlook via GigaOM