Can't send email via PHP Mail

Hi dear devs. I've been enjoying grav so much for the past few days, its amazing. Thanks a lot. But then I tried to configure form emails... Can't get it to send something via PHP Mail and that's my preferable way to do it.

I found out that I could debug using debug: true in email.yaml. But I haven't found any info on how do I debug. Only that I should use smpt instead of 'unreliable' PHP Mail, which works everytime I tested on the same hosting with the following simple code...

<?php
    error_reporting(0);
    if (isset($_POST["submit"])) {
        $name = $_POST['name'];
        $email = $_POST['email'];
        $message = $_POST['message'];
        $human = intval($_POST['human']);
        $from = $email;
        $to = 'email_to_send@domain.com';
        $subject = 'It was sent from domain.com';

        $body ="From: $name\n E-Mail: $email\n Message:\n $message";
        // Check if name has been entered
        if (!$_POST['name']) {
            $errName = 'Enter your name';
        }

        // Check if email has been entered and is valid
        if (!$_POST['email'] || !filter_var($_POST['email'], FILTER_VALIDATE_EMAIL)) {
            $errEmail = 'Enter correct email';
        }

        //Check if message has been entered
        if (!$_POST['message']) {
            $errMessage = 'Enter message';
        }
        //Check if simple anti-bot test is correct
        if ($human !== 14) {
            $errHuman = 'The correct answer is: 14';
        }
// If there are no errors, send the email
if (!$errName && !$errEmail && !$errMessage && !$errHuman) {
    if (mail ($to, $subject, $body, $from)) {
        $result='<div class="alert alert-success">Ty. Will reach to you soon.</div>';
    } else {
        $result='<div class="alert alert-danger">Sorry, there\'s some kind of mistake. Try to reach email_to_send@domain.com directly.</div>';
    }
}
    }
?>

All I have found about email logs was quite unhelpful logs/grav.log, which got something like this:

[2017-10-26 13:04:49] grav.DEBUG: Email Log:  [] []

Here's my form config. form.txt Sending from it saves contents to user/data/contact-form as expected.

Here's my email.yaml.

enabled: true
from:
from_name:
to: myemail@myemail.com
to_name: Any Name
mailer:
  engine: mail
  smtp:
    server: localhost
    port: 25
    encryption: none
    user: ''
    password: ''
  sendmail:
    bin: '/usr/sbin/sendmail'
content_type: text/html
debug: false

Can you help me not to reinvent the wheel and making simpler version of your plugin? :(

getgrav / grav-plugin-email

Can't send email via PHP Mail #67