email user groups when a post is submitted.

[V8Owner]

I have a requirement that i need to be able to send an email to all members of a specific user group when ever a new post has been submitted within a specified forum/child forum.

I use this area of my forum for linking data sheets, i need to be able to quickly notify employees that the sheet exists.

I realize i can do this in the admin cp but i need to automate it when our engineer submits the post.

I have also tried to put the list of recipients in the "notify of a new post" field but i can only put about 10 email addresses in the field.

Can somebody please help with a hack? i have searched but found nothing.