Hello friends! I had to send a file to one of my friend ans so I thought of sending it via email by attaching it to the mail. I use Outlook Express 6 as my mail client. The problem is that when I attached the 9 MB file to the mail and checked the final mail size in the outbox, the mail showed to be of 13 MB. Now, what is this extra 4 MB as the mail didn't had anything elase except the file attached, not even a single line in the body of the mail. Thank you.