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There's a great npm package that lets you send emails without an SMTP server: https://www.npmjs.com/package/sendmail https://www.npmjs.com/package/sendmail

• gruez 6y ago
  This is the equivalent of running your own SMTP server. That means you have to deal with all the associated deliverability problems.
• Analemma_ 6y ago
  If you actually try using this to send mass emails like mailing lists, you will immediately be blacklisted by the spam filters of every major email provider.
• sokoloff 6y ago
  Sending mail and having that mail arrive in a human’s inbox are pretty far from 1:1 at this point due to incessant spammers. The value of mailchimp and other ESPs is not that the email transaction is technically difficult, but rather that managing delivery rates is hard.
• dmurray 6y ago
  There's also a great Unix command called "mail". But as everyone else pointed out, that's not really the technical problem here.
• arethuza 6y ago
  Isn't that just an SMTP client? You still need an SMTP server somewhere to connect to.