My b2evolution Version: Not Entered

Can I enable this function or would I have to contact my host (webhostingbuzz)? This was the error message I got when I tried to send myself an email through the contact option on my blog

http://www.sportchiro.ca/b2evolution/blogs/index.php?blog=1

Sorry, could not send email.
Possible reason: the PHP mail() function may have been disabled on the server.

Thanks.