Nodemailer
Nodemailer is a popular Node.js library for sending emails from applications. It provides a simple, flexible API to send emails using various transport methods, including SMTP, Sendmail, and third-party services like Amazon SES or Mailgun. It supports features like HTML content, attachments, and embedded images, making it a go-to solution for email functionality in Node.js projects.
Developers should use Nodemailer when building Node.js applications that require email notifications, such as user registration confirmations, password resets, or marketing campaigns. It's particularly useful for its ease of integration, support for multiple email providers, and ability to handle complex email formats, reducing the need for low-level SMTP configuration.