(CkPython) POP3 GMail XOAUTH2 Authentication

Demonstrates using OAuth2 authentication with pop.gmail.com.

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, Solaris

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("pop.gmail.com")
mailman.put_MailPort(995)
mailman.put_PopSsl(True)

mailman.put_PopUsername("my_account@gmail.com")

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

# Load our previously obtained OAuth2 access token.
# See Getting a GMail POP3 OAuth2 Access Token
jsonToken = chilkat.CkJsonObject()
success = jsonToken.LoadFile("qa_data/tokens/gmail_pop3.json")
if (success == False):
    print(jsonToken.lastErrorText())
    sys.exit()

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

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

# Authenticate..
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 pop.gmail.com:995
# < +OK Gpop ready for requests from 87.9.200.42 l16mb86351205iok
# > AUTH XOAUTH2 dXNlcj1....VaMDJFAQE=
# < +OK Welcome.
# > STAT
# < +OK 301 1627357
# 
# -- Finished.

# 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.")