Hello

the my_mail function does not work in my host, ...

You are not the first who reported this.

Some comments (as comments):

function my_mail($TOMail, $TOTitle, $TOContent, $FromName, $SmtpServer="smtp.xxx.com", $From="users@xxx.com", $FromUser="users@xxx.com", $FromPass="*******") {
/**
 * The variables $From and $FromUser have the same content.
 * These variables can have different content?
 * Otherwise they are redundant.
 */
 
$jmail=new COM("JMail.Message")or die("Failed to call the Jmail class!");
/* die is bad, use a return (like $errorMessage) instead */
 
$jmail->charset= "utf-8";
$jmail->logging="true";
$jmail->ContentType = "text/html";
$jmail->From=$From;
$jmail->FromName=$FromName;
$jmail->AddRecipient($TOMail);
$jmail->Subject=$TOTitle;
$jmail->Body=$TOContent;
$jmail->MailServerUserName=$FromUser;
$jmail->MailServerPassword=$FromPass;
$jmail->Send($SmtpServer);
 
return true;
 
}

BUT LOOK OUT, this function will return false for any result, so we can not know whether the mail has been sent successfully.
And in fact, if the $TOMail is a valid e-mail address, it would be a success! So we need add "return true; " at the end of the function.

So there is a control structure needed. Maybe something like if ($jmail === true) {...} else {...}.

Tschö, Auge