Add new tag to welcome email in WordPress Multisite

Question

WordPress Multisite sends a welcome email with specific available tags, is there way to add more tags to it, I did not found anywhere about it, CUSTOMTAG1 or CUSTOMTAG2 is page content fetched from specific page id:

Dear User,

Your new account is set up.

You can log in with the following information:
Username: USERNAME
Password: PASSWORD

LOGINLINK

CUSTOMTAG1

CUSTOMTAG2

Thanks!

--The Team @ SITE_NAME

Answer 1

Try using wp get_user_meta function to grab the custom user field from the db and populate in welcome email. see here: http://codex.wordpress.org/Function_Reference/get_user_meta

Answer 2

You can stop the automatic email and send your own using the filter wpmu_welcome_user_notification. You have to pull the email from the user ID, the $meta parameter comes empty:

// return false stops the automatic email
add_filter( 'wpmu_welcome_user_notification', function( $userid, $password, $meta ) {
    # Your own wp_mail
    // wp_mail( $user_email, wp_specialchars_decode( $subject ), $message, $message_headers );
    return false;
}, 10, 3 );