Nearly all email providers place a limit on the size and type of files users can send and receive. So, when sharing big files with friends, most users look to cloud-based file storage and sharing services, like Dropbox.
If your friends are not Dropbox users, you can send them a request to send a file to your Dropbox with no need for them to sign up for an account. FileStork gives them a direct, secure upload link to your Dropbox.
If you are not sure what Dropbox is please refer to my earlier post.