(Chilkat2-Python) Send Encrypted Email using Certificate in Apple Keychain

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Send encrypted (S/MIME) email using a certificate found in the Apple Keychain.

Note: This example requires Chilkat v10.1.2 or later.

Chilkat2 Python Downloads install with pip pip3 install chilkat2 or download... Python Module for Windows, Linux, Alpine Linux, MacOS, Solaris

import sys
import chilkat2

email = chilkat2.Email()
email.Subject = "This email is encrypted"
email.Body = "This is a S/MIME encrypted mail"
email.From = "Joe <joe@example.com>"

# Emails are encrypted using the recipient's certificate.
recipientEmailAddr = "jane@example2.com"
email.AddTo("",recipientEmailAddr)

# Indicate that the email is to be sent encrypted.
email.SendEncrypted = True

cert = chilkat2.Cert()

# -----------------------------------------------
# This example requires Chilkat v10.1.2 or later.
# -----------------------------------------------

# The recipient's certificate is used to encrypt.
# This will load the certificate from the Apple Keychain.
success = cert.LoadByEmailAddress(recipientEmailAddr)
if (success != True):
    print(cert.LastErrorText)
    sys.exit()

# Specify the certificate to be used for encryption.
success = email.SetEncryptCert(cert)
email.SendEncrypted = True

mailman = chilkat2.MailMan()
mailman.SmtpHost = "smtp.example.com"
mailman.SmtpUsername = "joe@example.com"
mailman.SmtpPort = 587
mailman.StartTLS = True

# We'll get the SMTP password from the Apple Keychain.
# See how we originally saved the email credentials to the Keychain here:
# Save Email Credentials in Apple Keychain or Windows Credentials Manager
secrets = chilkat2.Secrets()

# On Windows, this is the Windows Credentials Manager
# On MacOS/iOS, it is the Apple Keychain
secrets.Location = "local_manager"

# Specify the name of the secret.
# service and username are required.
# appName and domain are optional.
# Note: The values are arbitrary and can be anything you want.
json = chilkat2.JsonObject()
json.UpdateString("appName","MyEmailApp")
json.UpdateString("service","SMTP")
json.UpdateString("domain","example.com")
json.UpdateString("username","joe@example.com")

mailman.SmtpPassword = secrets.GetSecretStr(json)

# Send the encrypted email.
# The email is encrypted and sent within the SendEmail function.
success = mailman.SendEmail(email)
if (success != True):
    print(mailman.LastErrorText)
    sys.exit()

print("Encrypted email sent!")