SMTP is pretty inefficient, especially with binary files, so a 25MB file could be quite a bit bigger during transmission. Add to that being able to send to many

SMTP is pretty inefficient, especially with binary files, so a 25MB file could be quite a bit bigger during transmission. Add to that being able to send to many email addresses and GMail could end up sending out e.g. 1GB for a single mail, even though the stored value is 25MB. Frankly, I'd be a bit irritated if people started sending me 100MB files via email. Put it up on a server and let people download it.