[Gmail-Users] Re: mb per email

What's the maximum message size limit?

You can send and receive messages up to 10 megabytes (MB) in size, including attachments. Incoming messages over 10 MB will be returned to the sender without being delivered to you.

 

I got this from the gmail help.

http://mail.google.com/support/bin/answer.py?answer=6589&topic=1527