Send email

Send email
You are encouraged to solve this task according to the task description, using any language you may know.

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)

Python

The function returns a dict of any addresses it could not forward to; other connections problems raise errors.
Tested on Windows, it should work on POSIX platforms too.

<lang python>import smtplib

def sendemail(from_addr, to_addr_list, cc_addr_list,

             subject, message,
             login, password,
             smtpserver='smtp.gmail.com:587'):
   header  = 'From: %s\n' % from_addr
   header += 'To: %s\n' % ','.join(to_addr_list)
   header += 'Cc: %s\n' % ','.join(cc_addr_list)
   header += 'Subject: %s\n\n' % subject
   message = header + message
   
   server = smtplib.SMTP(smtpserver)
   server.starttls()
   server.login(login,password)
   problems = server.sendmail(from_addr, to_addr_list, message)
   server.quit()
   return problems</lang>

Example use: <lang python>sendemail(from_addr = 'python@RC.net',

         to_addr_list = ['RC@gmail.com'],
         cc_addr_list = ['RC@xx.co.uk'], 
         subject      = 'Howdy', 
         message      = 'Howdy from a python function', 
         login        = 'pythonuser', 
         password     = 'XXXXX')

</lang>

Sample Email received:

Message-ID: <4a4a1e78.0717d00a.1ba8.ffcfdbdd@xx.google.com>
Date: Tue, 30 Jun 2009 22:04:56 -0700 (PDT)
From: python@RC.net
To: RC@gmail.com
Cc: RC@xx.co.uk
Subject: Howdy

Howdy from python function

Tcl

Library: tcllib

Also may use the tls package (needed for sending via gmail). <lang tcl>package require smtp package require mime package require tls

set gmailUser ******* set gmailPass hunter2; # Hello, bash.org!

proc send_simple_message {recipient subject body} {

   global gmailUser gmailPass

   # Build the message
   set token [mime::initialize -canonical text/plain -string $body]
   mime::setheader $token Subject $subject

   # Send it!
   smtp::sendmessage $token -userame $gamilUser -password $gmailPass \
           -recipients $recipient -servers smtp.gmail.com -ports 587

   # Clean up
   mime::finalize $token

}

send_simple_message recipient@example.com "Testing" "This is a test message."</lang>