Sending documents digitally and reliably: YouSendIt.com

Suppose you need to send some electronic files of considerable size to a vendor / partner / branch office, wherever. Typically, if you need to transfer this reliably, you would want to send these documents on a disk by courier. In addition, most of the email providers cannot handle documents or attachments that are more than 10 MB's, and in many cases, especially when it relates to work related documents, the sizes can be more than 10 MB's with ease (for example, high-resolution images, videos, rich presentations, etc). Not too many companies (except for the ones who have their own high-capability networks) have the capability to send such documents and do it reliably. For such cases, here is the service provider called YouSendIt.com
The YouSendIt email attachment solution frees your company from the frustrations of current email attachment limitations and provides convenient delivery of your PowerPoint presentations, Photoshop files, mp3’s and more. YouSendIt’s file tracking and notification services offer assurance that your important files are securely sent and received. YouSendIt can be deployed conveniently throughout your organization with the Microsoft Outlook plug-in and the YouSendIt desktop application.
As per the company, its profile of customers include the following: Broad base of business professionals from around the world including graphic designers, photographers, corporate IT managers, sales and marketing executives, music and movie producers, business consultants, administration, accounting, government agencies and general management.
It is free for files upto 100 MB, and charges for files for greater than that. There are some restrictions as well noted on the pricing page, but this would make a good solution for a company or a professional dealing with a large number of large sized documents.