I did a class at M3AAWG teaching the basic mechanics of sending an email, both really by hand using dig and netcat, and using SWAKS. No slides, but if you’re interested in the script I’ve posted a very rough copy of my working notes here.
Sending email
S
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Hi Steve, I don’t see the notes linked.
https://class.wordtothewise.com/life-of-an-email/script.html