I have a home made php script that can send an email.
Very simple :
$html = "<b>hello</b>";
$to = "johndoe@gmail.com";
$from = "me@server.com";
sendMAIL($from, $to, $html);
How can I replace those lines to use Mailchimp engine?
I have a Mailchimp account, and a Mailchimp API key.
Thank you for your help!