(CkPython) Office365 POP3 Login with OAuth2 Authentication

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Note: This example requires Chilkat v9.5.0.83 or greater.

Chilkat Python Downloads install with pip pip3 install chilkat or download... Python Module for Windows, MacOS, Linux, Alpine Linux

import sys
import chilkat

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

mailman = chilkat.CkMailMan()

mailman.put_MailHost("outlook.office365.com")
mailman.put_MailPort(995)
mailman.put_PopSsl(True)

# Use your O365 email address here.
mailman.put_PopUsername("OFFICE365_EMAIL_ADDRESS")

# When using OAuth2 authentication, leave the password empty.
mailman.put_PopPassword("")

# Load our previously obtained OAuth2 access token.
jsonToken = chilkat.CkJsonObject()
success = jsonToken.LoadFile("qa_data/tokens/office365.json")
if (success == False):
    print(jsonToken.lastErrorText())
    sys.exit()

mailman.put_OAuth2AccessToken(jsonToken.stringOf("access_token"))

# Make the TLS connection to the outlook.office365.com POP3 server.
success = mailman.Pop3Connect()
if (success != True):
    print(mailman.lastErrorText())
    sys.exit()

# Authenticate using XOAUTH2
success = mailman.Pop3Authenticate()
if (success != True):
    print(mailman.lastErrorText())
    sys.exit()

# Find out how many emails are on the server..
numEmails = mailman.CheckMail()
if (numEmails < 0):
    print(mailman.lastErrorText())
    sys.exit()

# Examine the POP3 session log:
print(mailman.pop3SessionLog())

# The POP3 session log will look something like this:

# **** Connected to outlook.office365.com:995
# < +OK The Microsoft Exchange POP3 service is ready. [QwBIADIAUABSADEAOABD...YwBvAG0A]
# > AUTH XOAUTH2
# < + 
# > <base64 string in XOAUTH2 format>
# < +OK User successfully authenticated.
# > STAT
# < +OK 3 375302

# End the POP3 session and close the connection to the GMail server.
success = mailman.Pop3EndSession()
if (success != True):
    print(mailman.lastErrorText())
    sys.exit()

print("Finished.")