How can PHP be used to send and receive emails from a web server?

To send and receive emails from a web server using PHP, you can use the built-in `mail()` function to send emails and the `IMAP` or `POP3` extensions to receive emails. You will need to configure your server to allow outgoing and incoming email connections, and ensure that the necessary PHP extensions are enabled. 

// Sending an email
$to = "recipient@example.com";
$subject = "Test Email";
$message = "This is a test email.";
$headers = "From: sender@example.com";

mail($to, $subject, $message, $headers);

// Receiving emails
$hostname = '{mail.example.com:993/imap/ssl}INBOX';
$username = 'email@example.com';
$password = 'password';

$mailbox = imap_open($hostname, $username, $password);

if ($mailbox) {
    $emails = imap_search($mailbox, 'ALL');

    if ($emails) {
        foreach ($emails as $email_number) {
            $email_header = imap_headerinfo($mailbox, $email_number);
            echo "From: " . $email_header->fromaddress . "<br>";
            echo "Subject: " . $email_header->subject . "<br>";
        }
    }

    imap_close($mailbox);
}

Keywords

PHP email send receive web server

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