Most of the email clients which will not allow us to send attachments when it exceeds more than 10 mb. Here are some of the website which allow's you to send more than 500mb.
How it Works?
In normal mode data is transferred to our server unencrypted. This means, potentially, that someone could evesdrop on the data you are sending.
In secure mode, the data is encrypted, so even if it was intercepted by a third party, it cannot be read. This is confirmed by the presence of a padlock symbol on your web browser. It's the same method that's used for protecting your credit card details on shopping sites.
If the big file you want to transfer contains sensitive information, we recommend you use the secure mode.
When a file is uploaded in secure mode, the download will also be secure.
Links:
http://www.mailbigfile.com/
http://www.uploadway.com/
http://www.orbitfiles.com/