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In this episode of Syntax, the author of nodemailer is invited. The author is from Estonia, no wonder the accent is like this.
They talked a lot about email technology topics. The nodemailer library has been maintained for 13 years, starting from the early days of Node.js 0.9x. Currently, it is downloaded 2.8 million times per week.
It is respectable because of its continuous open source iteration and the complexity of mail technology itself.
The author mentioned that email existed 50 years ago. SPF/DMARC, etc. were mentioned.
They also discussed why mail can be commercialized, how to do it, and what pitfalls there are.