I have a script that prepares an email and then schedules it to send 24 hours later... I call the Mandrill API
$mandrill->messages->sendTemplate($template_name, $template_content, $message, (string)$send_at);
and the send_at value is 2016-09-15 09:09:28 or whatever in the future.
The email triggers right away though!! How do I get it to send 24 hours in the future.