(Ruby) Send High Priority Email (SMTP, X-Priority header)

Demonstrates how to send high-priorty email (or lower priority email) by setting the X-Priority header field.

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# The mailman object is used for sending and receiving email.
mailman = Chilkat::CkMailMan.new()

# Set the SMTP server (obviously, use your SMTP server, not chilkatsoft.com)
mailman.put_SmtpHost("smtp.chilkatsoft.com")

# Set the SMTP login/password (if required)
mailman.put_SmtpUsername("myUsername")
mailman.put_SmtpPassword("myPassword")

# Create a new email object
email = Chilkat::CkEmail.new()

email.put_Subject("This is a test")
email.put_Body("This is a test")
email.put_From("Chilkat Support <support@chilkatsoft.com>")
success = email.AddTo("Chilkat Admin","admin@chilkatsoft.com")
# To add more recipients, call AddTo, AddCC, or AddBcc once per recipient.

# To send high-priority email, 
# add the X-Priority header field with the value "1" 
# to indicate highest-priority.
# A value of "3" is normal, which is the same as not setting
# the X-Priority header at all, and "5" is the lowest. 
# "2" and "4" are in-betweens.

# Microsoft Outlook might add the following headers when
# sending high-priority email.

# X-Priority: 1 (Highest) 
# X-MSMail-Priority: High 
# Importance: High 

# The X-Priority header alone is enough to make the email high-priority.

email.AddHeaderField("X-Priority","1")

# Call SendEmail to connect to the SMTP server and send.
# The connection (i.e. session) to the SMTP server remains
# open so that subsequent SendEmail calls may use the
# same connection.  
success = mailman.SendEmail(email)
if (success != true)
    print mailman.lastErrorText() + "\n";
    exit
end

success = mailman.CloseSmtpConnection()
if (success != true)
    print "Connection to SMTP server not closed cleanly." + "\n";
end

print "Mail Sent!" + "\n";