Open source mass mailing

Here are some open-source mass mailing tools:

  1. Mailman: A popular open-source mailing list manager that allows you to create and manage mailing lists, as well as send mass emails to subscribers.
  2. Postfix: A widely-used open-source mail transfer agent (MTA) that can be used to send mass emails. It's highly customizable and scalable.
  3. Sendmail: Another popular open-source MTA that can be used to send mass emails. It's been around for a long time and has a large user base.
  4. OpenSMTPD: A modern open-source MTA that's designed to be fast, secure, and easy to use. It's a good alternative to Postfix and Sendmail.
  5. Mailgun: A cloud-based open-source email service that provides a simple API for sending mass emails. It's free for small volumes of emails.
  6. Mailjet: A cloud-based open-source email service that provides a simple API for sending mass emails. It's free for small volumes of emails.
  7. OpenMandrill: An open-source version of Mandrill, a popular email service that provides a simple API for sending mass emails.
  8. SwiftMailer: A PHP library that provides a simple way to send mass emails using a variety of transport mechanisms, including SMTP, Sendmail, and Mailgun.
  9. PHPMailer: A popular PHP library that provides a simple way to send mass emails using a variety of transport mechanisms, including SMTP, Sendmail, and Mailgun.
  10. Nodemailer: A Node.js library that provides a simple way to send mass emails using a variety of transport mechanisms, including SMTP, Sendmail, and Mailgun.

When choosing an open-source mass mailing tool, consider the following factors:

Remember to always follow best practices for mass emailing, including obtaining consent from recipients, providing an unsubscribe link, and respecting spam laws and regulations.