# Send emails using PHPMailer with SMTP

## Prerequisites

Before you start, you'll need:

- A Resend [API key](/guides/get-started-create-an-api-key)
- A [verified domain](/guides/get-started-add-a-domain)

## Guide

:::::steps
::::step{title="Install"}
Get the [PHPMailer](https://github.com/PHPMailer/PHPMailer) package.

:::code-group
```bash php theme={"theme":{"light":"github-light","dark":"vesper"}}
composer require phpmailer/phpmailer
```
:::
::::

:::step{title="Send email using SMTP"}
When configuring your SMTP integration, you'll need to use the following credentials:

- **Host**: `smtp.resend.com`
- **Port**: `587`
- **Username**: `resend`
- **Password**: `YOUR_API_KEY`

Then use these credentials to send with PHPMailer:

```php theme={"theme":{"light":"github-light","dark":"vesper"}}
<?php

// Include Composer autoload file to load PHPMailer classes
require __DIR__ . '/vendor/autoload.php';

use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

$mail = new PHPMailer(true);

try {
    $mail->isSMTP();
    $mail->Host = 'smtp.resend.com';
    $mail->SMTPAuth = true;
    $mail->Username = 'resend';
    $mail->Password = 're_xxxxxxxxx';
    $mail->SMTPSecure = 'tls';
    $mail->Port = 587;

    // Set email format to HTML
    $mail->isHTML(true);

    $mail->setFrom('onboarding@resend.dev');
    $mail->addAddress('delivered@resend.dev');
    $mail->Subject = 'Hello World';
    $mail->Body = '<strong>It works!</strong>';

    $mail->send();

    // Log the successfully sent message
    echo 'Email successfully sent';
} catch (Exception $e) {
    // Log the detailed error for debugging
    error_log('Mailer Error: ' . $mail->ErrorInfo);
    // Show a generic error message to the user
    echo 'There was an error sending the email.';
}
```
:::
:::::

## Examples

:::card{title="PHPMailer SMTP Example" href="https://github.com/resend/resend-phpmailer-smtp-example" icon="arrow-up-right-from-square"}
See the full source code.
:::

## Related pages

- [Send emails with SMTP](./get-started-send-with-smtp.md)
- [Send Auth0 transactional emails with Resend](./get-started-send-with-auth0.md)
- [Send emails using Customer.io with SMTP](./get-started-send-with-customer-io-smtp.md)
- [Send emails using Django with SMTP](./get-started-send-with-django-smtp.md)
- [Send emails using Laravel with SMTP](./get-started-send-with-laravel-smtp.md)
- [Send emails using Liferay with SMTP](./get-started-send-with-liferay-smtp.md)
- [Send emails using Nodemailer with SMTP](./get-started-send-with-nodemailer-smtp.md)
- [Send emails using Rails with SMTP](./get-started-send-with-rails-smtp.md)
- [Send emails using Retool with SMTP](./get-started-send-with-retool-smtp.md)
- [Send emails using Supabase with SMTP](./get-started-send-with-supabase-smtp.md)

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