I made a PHP script that runs from the command line and sends a message using the mail function.
$email_from = "support@wideservices.gr";
$email_subject = "my subject";
$email_to = "spyros@wideservices.gr";
$message="message in greek";
$headers = "From: ".$email_from;
mail($email_to,$email_subject,$message,$headers);
The mail is ok with Latin alphabet, but with Greek I get something like this:
I tried to use:
$character_set = "utf-8";
But without success and it is not a web page so I can't try meta.