Mailing list / Mailchimp?

[fortytwoeleven]

Hi,
Hope this is in the right section.. I thought I would ask here because I can't regt much of a response from other forums.

I'm looking for a way that I can send an email to a default address. and once that adress receives the email it triggers it to mail it out to a mailing list of emails.

Is there something out there already like this?
Also I am hoping to do it so the mailing list is 0 maintenance, such as it pulls the email addresses from WHM / Cpanel / WHMCS do I don't have to keep adding and removing emails.

Any advice would be great! thank you