BuddyPress.org

Hi I am using wordpress 3.5.1 plus just installed buddypress 1.7.

All looks great, but on testing registration, no mail seems to be sent?
(I’ve checked spam folders).

Any suggestions?
( I read somewhere that I should check that PHP mailer is installed on my server- could this be the problem?)
I had no problem with earlier installs.

Thanks for the advice.