libgmailer not sending email

[Jas]

So, I downloaded libgmailer, and I have it set up as below:

<?php
    require_once("./libgmailer.php");
 
    $gmailer = new GMailer();
    if ($gmailer->created) {
       $gmailer->setLoginInfo('my', 'pass', 2.5);
       if ($gmailer->connect()) {
            if($gmailer->send("me@site.com", "Hello World", "Cool!!")){
                echo 'The message was sent!!!';
            }else{
                echo 'Message not sent';
            }
       } else {
          die("Fail to connect because: ".$gmailer->lastActionStatus());
       }
    } else {
       die("Failed to create GMailer because: ".$gmailer->lastActionStatus());
    }
 ?>

It prints

Message not sent

What might be the problem? It is connecting, but not sending.

[tech_support]

Just try echoing

$gmailer->send("me@site.com", "Hello World", "Cool!!") 

and see what happens.

[Jas]

I get this:

Nothing.
Does that mean that there is an error hmailserver? (Is that even needed for this?)

[Jas]

Anyone have an idea?

[tech_support]

Do you have cURL installed?

[Jas]

I'm not sure what that is, but it looks like it's turned on in the PHP settings.

[Jas]

Does anyone have any ideas? I really need this to work

[Jas]

. . . . Is there any good alternative then? Just give me something to repsond so that when an application is accepted the user knows.