BuddyPress uses WordPress’ email routines. There is no special handling. You are probably running into issues with your host throttling the increased number of emails that BP sends. I’d suggest you contact your host and ask them.
My Blog is not yet launched. i have cross checked. that. if i use wordpress i am able to do everything user registration forgetpass. and even getting mails on the signup defined email. but whenever i install plugin of buddypress it stops working. on wordpress its working fine. I am using bluehost
i am using wordpress 3.1
and buddypres. 1.2.8
if u can catch me @skype = punj4b1_
Sometimes on most regular hosted servers, the emails can take up to an hour, yes, and hour to receive. Especially if there is alot of activity going on on your site. The more activity, the longer it takes.
I could probably tell you for a fact, they are getting send, just taking extremely slow.