#1 Yahoo YousendIt

YouSendIt is a digital file delivery company that lets users send, receive and track files on demand. In 2011 the company added the ability to share folders and sign documents. The sender can enter the recipients' e-mail addresses, attach the file and send it; the recipients receive an e-mail notification with a URL that lets them download the file. The company operates on a freemium basis, with basic features being offered for free and more advanced features for a fee. Sending a file up to 50 MB in size is free; paid accounts can send files up to 2 GB.

Sign in to Yahoo Mail and on the left pane you'll see 'Applications' — expand it and click on Attach Large Files. Then you can attach a file as large as 100MB to your email & it will be available to download for 30 days.

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