Symfony simplifies email sending by providing a dedicated component, Mailer, which facilitates the creation, configuration, and sending of emails. The Mailer component supports various transports, such as SMTP, Sendmail, and third-party email services like Mailgun and SendGrid. With a simple and intuitive API, developers can compose messages in plain text or HTML, add attachments, and configure advanced options like custom headers. By using Symfony Mailer, you benefit from a robust and flexible solution for managing email sending, easily integrating messaging features into your applications while ensuring efficient error handling and configuration logging.