SMTP Mail snippet

mail.rb

require 'net/smtp'

#Snippet 1: writing simple using your stmp gmail

message = <<MESSAGE_END
From: Private Person <someone@fromsomemail.com>
To: A Test User <someoneelse@tosomemail.com>
Subject: SMTP e-mail test

This is a test e-mail message.
MESSAGE_END

Net::SMTP.start('localhost') do |smtp|
  smtp.send_message message, 'someone@fromsomemail.com', 
                             'someoneelse@tosomemail.com'
end

#Snippet 2: Start SMTP server using server

Net::SMTP.start('stmp.gmail.com')

#Snippet 3: Start STMTP server using credentials 

Net::SMTP.start('smtp.gmail.com', 25, 'localhost', 'username', 'password', :plain)

#OR
smtp_config_array2params = ['smtp.gmail.com', 25, 'localhost', 'username', 'password', :plain]

Net::SMTP.start(*smtp_config_params)

#OR
smtp_config_hash2params = {:smtp_domain=>'smtp.gmail.com', :port_no=>25, :host_name => 'localhost', :username =>'username', :password=>'password', :password_type=>:plain}

Net::SMTP.start(*smtp_config_hash2params.values)

#OR

@params = smtp_config_hash2params.collect{|k, v| v}

Net::SMTP.start(*@params)

#Snippet 4: Start sending email using HTML tags

require 'net/smtp'

message = <<MESSAGE_END
From: Private Person <me@fromdomain.com>
To: A Test User <test@todomain.com>
MIME-Version: 1.0
Content-type: text/html
Subject: SMTP e-mail test

This is an e-mail message to be sent in HTML format

<b>This is HTML message.</b>
<h1>This is headline.</h1>
MESSAGE_END

Net::SMTP.start('localhost') do |smtp|
  smtp.send_message message, 'me@fromdomain.com','test@todomain.com'

#Snippet 5: sending email with email attachments

require 'net/smtp'

filename = "/tmp/test.txt"
# Read a file and encode it into base64 format
filecontent = File.read(filename)
encodedcontent = [filecontent].pack("m")   # base64

marker = "AUNIQUEMARKER"

body =<<EOF
This is a test email to send an attachement.
EOF

# Define the main headers.
part1 =<<EOF
From: Private Person <me@fromdomain.net>
To: A Test User <test@todmain.com>
Subject: Sending Attachement
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary=#{marker}
--#{marker}
EOF

# Define the message action
part2 =<<EOF
Content-Type: text/plain
Content-Transfer-Encoding:8bit

#{body}
--#{marker}
EOF

# Define the attachment section
part3 =<<EOF
Content-Type: multipart/mixed; name=\"#{filename}\"
Content-Transfer-Encoding:base64
Content-Disposition: attachment; filename="#{filename}"

#{encodedcontent}
--#{marker}--
EOF

mailtext = part1 + part2 + part3

# Let's put our code in safe area
begin 
  Net::SMTP.start('localhost') do |smtp|
     smtp.sendmail(mailtext, 'awong.cm@gmail.com',
                          ['awong.chmg@yahoo.com'])
  end
rescue Exception => e  
  print "Exception occured: " + e  
end