Mailgun Quick Setup

Sign Up: Go to mailgun.com and create an account.

Verify: Confirm your email and phone.

Add Domain: In Sending > Domains, add your domain or use sandbox.

DNS Setup: Add Mailgun's DNS records to your domain host and wait for verification.

Get Credentials: Copy your SMTP login or API key from the domain settings.

Step 2 :

Configure Mailgun on a Laravel project. Install Guzzle (if not installed):

composer require guzzlehttp/guzzle

Step 3 :

Set .env values:

MAIL_MAILER=mailgun
MAILGUN_DOMAIN=your-domain.com
MAILGUN_SECRET=your-mailgun-private-api-key
MAILGUN_ENDPOINT=api.mailgun.net
MAIL_FROM_ADDRESS=your-email@your-domain.com
MAIL_FROM_NAME="${APP_NAME}"

Step 4 :
config/mail.php

'mailgun' => [
    'transport' => 'mailgun',
],

config/service.php

'mailgun' => [
    'domain' => env('MAILGUN_DOMAIN'),
    'secret' => env('MAILGUN_SECRET'),
    'endpoint' => env('MAILGUN_ENDPOINT', 'api.mailgun.net'),
],

Step 5 :

php artisan opimitze:clear
php artisan optimize

Using MailGun Api sending mail process:

<?php

// API-key and URL
$apiKey = 'your api key here';
$domain = 'your domain here';
$url = "https://api.eu.mailgun.net/v3/$domain/messages";

// Emailsettings
$postFields = [
    'from'    => 'your form address',
    'to' => 'your to address',
    'subject' => 'Mail subject',
    'text' => 'This is a test email for Mr x! Is this email received?'
];

// cURL-init
$ch = curl_init();

// Set cURL options
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($ch, CURLOPT_USERPWD, 'api:' . $apiKey);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postFields);

// Execute and get result
$result = curl_exec($ch);

// Error logging
if (curl_errno($ch)) {
    echo 'Error at cURL: ' . curl_error($ch);
} else {
    echo 'Result: ' . $result;
}

// Close connection
curl_close($ch);

?>