How to send SMTP email for office365 with python u

Question

I am trying to send an email from my office365 corporate account using python. I am new to python. This code previously worked when using my hotmail account, however now that I have a need to send confidential information, I must use my corporate email.

I have tried a couple things.

• Verified that my username and password is correct.
• Used both python2 and python3. Both give the same error: 535 5.7.3 Authentication unsuccessful
• I previously was using mailserver.starttls() when I got the above error, then after some research, I tried to pass a
  certificate.mailserver.starttls(certfile='office365.cer')

I am unclear on the certificate part, but my steps include, looking online to find out how to export a certificate. Using chrome browser, microsoftonline.com has a chain certificate. I can export the root and the level just below the root but not the last level. I dont know how to pass both of these files, so I have simply passed the root certificate. At this point I get the error: ssl.SSLError: [SSL] PEM lib (_ssl.c:3309)

i got stuck at this point. Any help is appreciated. Code used below

import smtplib

mailserver = smtplib.SMTP('smtp.office365.com',587)
mailserver.ehlo()
mailserver.starttls(certfile='office365.cer')
mailserver.ehlo()
mailserver.login('[e-mail]', 'password')
mailserver.sendmail('[e-mail]','[e-mail]','python email')
mailserver.quit()

Answer 1

I found a library that it's working for me:

https://github.com/Narcolapser/python-o365

https://pypi.python.org/pypi/O365

Install it using PIP and then:

from O365 import Message
o365_auth = ('[e-mail]','YourPassword')
m = Message(auth=o365_auth)
m.setRecipients('[e-mail]')
m.setSubject('I made an email script.')
m.setBody('Talk to the computer, cause the human does not want to hear it any more.')
m.sendMessage()

Answer 2

The code has slightly changed. The above code won't work. Please use the below code. Reference

from O365 import Account

credentials = ('client_id', 'client_secret')

account = Account(credentials)
m = account.new_message()
m.to.add('[e-mail]')
m.subject = 'Testing!'
m.body = "George Best quote: I've stopped drinking, but only while I'm asleep."
m.send()

Answer 3

Well, you are almost there. The following code will do the trick:

import smtplib

mailserver = smtplib.SMTP('smtp.office365.com',587)
mailserver.ehlo()
mailserver.starttls()
mailserver.login('[e-mail]', 'password')
mailserver.sendmail('[e-mail]','[e-mail]','python email')
mailserver.quit()

Use the following links for more information:

http://www.aventistech.com/2016/03/07/python-send-email-via-office-365-tls/

https://docs.python.org/3/library/smtplib.html

https://gist.github.com/jasonjoh/3ec367594c3fa662ee983a617bdc7deb