For direct SMTP interaction if not using Action Mailer

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Strengths: Node.js is ideal for building fast, scalable, and event-driven applications, making it excellent for web services that trigger emails in real-time or handle high volumes of transactional emails. Its asynchronous nature is well-suited for I/O operations like sending emails.
Key Libraries:

Nodemailer: A powerful and widely used module for sending emails from Node.js applications. It supports various SMTP servers, secure connections, HTML content, attachments, and more.

Express.js: A popular web framework often used with Nodemailer to create API endpoints that trigger emails.
Handlebars.js or EJS: Popular templating engines for dynamic email content.

Common Use Cases: Transactional emails (e.g., password shop resets, order confirmations, user sign-up verifications), real-time application alerts, backend services for web applications that send user-triggered communications.



Strengths: PHP is widely used for web development and offers a robust environment for server-side scripting. It has a large community and extensive documentation, making it easy to integrate email sending into web applications and Content Management Systems (CMS).
Key Libraries: