Welcome Pack is a BuddyPress plugin by Paul Gibbs that enhances the new user experience.
When a user registers on your site, Welcome Pack lets you automatically send them a friend or group invitation, a Welcome Message and can redirect them to a Start Page. You can also customise the default emails sent by BuddyPress to ensure that they match the brand and tone of your site.
Welcome Pack 2.1 – Introduction from Paul Gibbs on Vimeo.
Plugin homepage: http://byotos.com/plugins/welcome-pack/
Support forum: http://wordpress.org/tags/welcome-pack