Not really tested, but try this:
In
Admin/Admin.pl find:
my $message = &template_email($welcomeregemail, {'displayname' => $member{'regrealname'}, 'username' => $reguser, 'password' => $member{'passwrd1'}});
And replace with (so, just add the highlighted):
my $message = &template_email($welcomeregemailadmin, {'displayname' => $member{'regrealname'}, 'username' => $reguser, 'password' => $member{'passwrd1'}});
Then in
Languages/English/Email.lng find:
$welcomeregemail = qq~Welcome, {yabb displayname}!
Your user ID is {yabb username}, and your password is {yabb password}.
You can log in using your displayname ({yabb displayname}), your Email address, or your user ID ({yabb username}).
You may change your password after you login by clicking on the User CP tab at the top of the {yabb mbname} main page: {yabb scripturl} and then click the Profile tab, click on Edit Profile (you will need to enter your password as a security measure).
Regards,
The {yabb mbname} team~;
And add after - this will be the email which is sent when adding a member from the Admin Center, so you'll obviously want to change the text to whatever you want:
$welcomeregemailadmin = qq~Welcome, {yabb displayname}!
Your user ID is {yabb username}, and your password is {yabb password}.
You can log in using your displayname ({yabb displayname}), your Email address, or your user ID ({yabb username}).
You may change your password after you login by clicking on the User CP tab at the top of the {yabb mbname} main page: {yabb scripturl} and then click the Profile tab, click on Edit Profile (you will need to enter your password as a security measure).
Regards,
The {yabb mbname} team~;