‘Automatic follow up emails for new users’ problems

Not a big deal but still, it bothers me.

I have created 4 follow up emails for new users. 1 as ‘Create a blog’ action and 3 as ‘Create new user’.

1. Last one of ‘Create new user’ actions never gets to users inbox. Not even as a spam. I’m using some constants in this one (but I also use constants in other follow ups) and they look like this:

%siteurl%members/%username%/groups/create

%siteurl%

2. In one of follow ups which does reach new user I have a different problem. One of constants doesn’t work as it should. My site is boonika.net and I use %blogurl%/wp-admin/admin.php?page=invite_main so new members can invite their friends. But this URL is displayed in email which new user receives: http://boonika.net/wp-admin/admin.php?page=invite_main and not http://user.boonika.net/wp-admin/admin.php?page=invite_main

Thanks in advance,

Marko