email max size content
There is no maximum size per-se.
It is merely a combination of :
(a) The maximum size defined by your sending server
(b) The maximum size defined as accepted by the receiving server
The rule of thumb I use is 10MB ... or 15MB if I fancy "pushing it". I would never dream of even trying 25MB !
Just use a service like YouSendit, WeTransfer or DropBox.
Alternativley, if you're doing videos, you know you can also have private, passsword-protected videos on Vimeo and Youtube ?