Index: bp-core/bp-core-filters.php
===================================================================
--- bp-core/bp-core-filters.php	(revision 8136)
+++ bp-core/bp-core-filters.php	(working copy)
@@ -249,6 +249,10 @@
  */
 function bp_core_filter_user_welcome_email( $welcome_email ) {
 
+	// Don't touch the email when a user is registered by the site admin
+	if ( is_admin() )
+		return $welcome_email;
+
 	// Don't touch the email if we don't have a custom registration template
 	if ( ! bp_has_custom_signup_page() )
 		return $welcome_email;
@@ -275,6 +279,10 @@
  */
 function bp_core_filter_blog_welcome_email( $welcome_email, $blog_id, $user_id, $password ) {
 
+	// Don't touch the email when a user is registered by the site admin.
+	if ( is_admin() )
+		return $welcome_email;
+
 	// Don't touch the email if we don't have a custom registration template
 	if ( ! bp_has_custom_signup_page() )
 		return $welcome_email;