How can PHP developers handle the issue of SMTP blocking by hosting providers like 1&1 or ionos when using PHPMailer for email sending?

SMTP blocking by hosting providers like 1&1 or ionos can be handled by using an alternative SMTP server that is not blocked by the provider. One solution is to use a third-party SMTP service like SendGrid or Gmail SMTP to send emails from PHPMailer. By configuring PHPMailer to use a different SMTP server, you can bypass the blocking issue and ensure successful email delivery.

// Include PHPMailer Autoload file
require 'vendor/autoload.php';

// Create a new PHPMailer instance
$mail = new PHPMailer();

// Set SMTP settings for a third-party SMTP service
$mail->isSMTP();
$mail->Host = 'smtp.sendgrid.net';
$mail->SMTPAuth = true;
$mail->Username = 'your_sendgrid_username';
$mail->Password = 'your_sendgrid_password';
$mail->SMTPSecure = 'tls';
$mail->Port = 587;

// Set email content and recipient
$mail->setFrom('your_email@example.com', 'Your Name');
$mail->addAddress('recipient@example.com', 'Recipient Name');
$mail->Subject = 'Subject of the email';
$mail->Body = 'This is the body of the email';

// Send the email
if ($mail->send()) {
    echo 'Email sent successfully';
} else {
    echo 'Error sending email: ' . $mail->ErrorInfo;
}