(Python) Sending S/MIME Encrypted Email

Sends an encrypted email using the recipient's digital certificate from a .cer file.

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import sys
import chilkat

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

#  Any string argument automatically begins the 30-day trial.
success = mailman.UnlockComponent("30-day trial")
if (success != True):
    print mailman.lastErrorText()
    sys.exit()

#  Set the SMTP server.
mailman.put_SmtpHost("smtp.comcast.net")

#  Load the .cer file into a certificate object.
#  When sending S/MIME encrypted email, it is the recipient's
#  certificate that is used for encryption.  Only the public key
#  is needed to encrypt.  The recipient is the only
#  one possessing the private key, and therefore is the only
#  one able to decrypt.
cert = chilkat.CkCert()
success = cert.LoadFromFile("cknotes.cer")
if (success != True):
    print cert.lastErrorText()
    sys.exit()

#  Create a new email object
email = chilkat.CkEmail()

email.put_Subject("This email is encrypted")
email.put_Body("This is a digitally encrypted mail")
email.put_From("Chilkat Support <support@chilkatsoft.com>")
email.AddTo("Chilkat Blog","admin@cknotes.com")

#  Indicate that the email is to be sent encrypted.
email.put_SendEncrypted(True)

#  Specify the certificate to be used for encryption.
email.SetEncryptCert(cert)

success = mailman.SendEmail(email)
if (success != True):
    print mailman.lastErrorText()
else:
    print "Mail Sent!"