Task

Write a function to send an email.

The function should have parameters for setting From, To and Cc addresses; the Subject, and the message text, and optionally fields for the server name and login details.

 If appropriate, explain what notifications of problems/success are given.
 Solutions using libraries or functions from the language are preferred, but failing that, external programs can be used with an explanation.
 Note how portable the solution given is between operating systems when multi-OS languages are used.


(Remember to obfuscate any sensitive data used in examples)




-- load the smtp support
local smtp = require("socket.smtp")
 
-- Connects to server "localhost" and sends a message to users
-- "fulano@example.com",  "beltrano@example.com", 
-- and "sicrano@example.com".
-- Note that "fulano" is the primary recipient, "beltrano" receives a
-- carbon copy and neither of them knows that "sicrano" received a blind
-- carbon copy of the message.
from = "<luasocket@example.com>"
 
rcpt = {
  "<fulano@example.com>",
  "<beltrano@example.com>",
  "<sicrano@example.com>"
}
 
mesgt = {
  headers = {
    to = "Fulano da Silva <fulano@example.com>",
    cc = '"Beltrano F. Nunes" <beltrano@example.com>',
    subject = "My first message"
  },
  body = "I hope this works. If it does, I can send you another 1000 copies."
}
 
r, e = smtp.send{
  from = from,
  rcpt = rcpt, 
  source = smtp.message(mesgt)
}
 