Activation Email showing [WordPress] in subject and not site name?

Ah, the magic internet fairies pulled one of their "find the solution right after you ask for help" tricks on me again!

I should have mentioned this was BuddyPress. If anyone else needs help with this, I found this great code snippet:

http://buddypress.org/community/groups/how-to-and-troubleshooting/forum/topic/how-to-remove-sitename-from-email-notification-subject-1/

function fix_bp_activation_subject($subject) {
return __( "Activate Your Account", 'buddypress' );
}
add_filter('bp_core_activation_signup_user_notification_subject', 'fix_bp_activation_subject');

I don't have buddypress installed and I seem to be getting this issue.

I tried adding that code to my theme functions I'm still getting this problem.

Any ideas?

Hi again

The problem is that the activation email that is sent to the new user contains the following subject line and message body (see example below)

The problem with the subject is I don't want it to include the word '[WordPress]' in squared brackets. I'd like to replace it with my site name...

I don't mind the body of the message too much, although I would like to alter that if possible. Surely It would make more sense if it read 'to activate your account' as opposed to user?

Thank you for your time

==========
EXAMPLE
==========

SUBJECT:

"[WordPress] Activate *then the username is inserted here (this works)*"

BODY:

"To activate your user, please click the following link:

*link to activate the user is inserted here (this works)*

After you activate, you will receive *another email* with your login."