SeaSMS is a free service which which allows you to send free MMS worldwide without any registration. You can send image, document, video, audio ans size upto 5000 KB The steps are quite easy to send MMS
1. go to seasms.com and navigate to left you will see a option name 'Browse' by which you have to browse the file from your computer and select and hit on 'SEND MMS' button
2. In same place you will see a different screen asking you if you want to send this MMS to India or out of India select your destination.
3. Again a new fresh screen will appear asking for number of the person to whom you want to send MMS and your name and after inserting required detail now hit 'Send' within few second the person will receive MMS.
The person who have received MMS will get a text message with the link of MMS and he can view that by visiting that link and download