The easiest thing if you just want to send an automated message would probably be to make a PHP script for it, perhaps require some key so that people don't spam you merely by visiting the script's address, and then call URLDownloadToFile to execute said script.
Of course there are other better ways, but that would by far be the simplest to implement I believe.
// You can set things like sender (required), CC, BCC etc. through the headerEx argument
$headerEx = "From: email@example.com\n\rReply-to: firstname.lastname@example.org\n\rCC: email@example.com";
mail("firstname.lastname@example.org", "subject", "body", $headerEx);
"Why do programmers get Halloween and Christmas mixed up?"
Because Oct(31) = Dec(25)