Send email through google SMTP, step by step, python2

Let's establish the session with Google server:

session = smtplib.SMTP('smtp.gmail.com',587)

Opps:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'smtplib' is not defined

Need to import module before start:

import smtplib

Let's establish again the session:

session = smtplib.SMTP('smtp.gmail.com',587)

What is inside in this session variable:

print session

<smtplib.SMTP instance at 0x02F0A788>

Check some service availability:

session.ehlo()

(250, 'smtp.gmail.com at your service, [87.110.183.173]\nSIZE 35882577\n8BITMIME\nSTARTTLS\nENHANCEDSTATUSCODES\nPIPELINING\nCHUNKING\nSMTPUTF8')

Check if seccure connection is available:

session.starttls()

(220, '2.0.0 Ready to start TLS')

Do the eclo again:

session.ehlo()

(250, 'smtp.gmail.com at your service, [87.110.183.173]\nSIZE 35882577\n8BITMIME\nAUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH\nENHANCEDSTATUSCODES\nPIPELINING\nCHUNKING\nSMTPUTF8')

Authorize with credentials:

session.login('catonrug.secondo@gmail.com', 'QnMgPRKjvb42GNmZ')

(235, '2.7.0 Accepted')

Now we will prepare the message. Let's print existing variable:

print msg

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'msg' is not defined

Looks like there is no template for msg. Let's start with email body:

msg = MIMEText('body', 'plain', 'utf-8')

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'MIMEText' is not defined

MIMEText module must be imported:

from email.mime.text import MIMEText

prepait again the body:

msg = MIMEText('body', 'plain', 'utf-8')

Check out how the body has been changed:

print msg

From nobody Fri Jun 22 14:41:38 2018
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: base64

Ym9keQ==

msg['Subject'] = Header('subject', 'utf-8')
from email.Header import Header
msg['Subject'] = Header('subject', 'utf-8')
print msg

msg['From'] = Header('catonrug@gmail.com', 'utf-8')
print msg

msg['To'] = 'aigars@gmail.com'
print msg

msg['Date'] = formatdate()
from email.Utils import formatdate
msg['Date'] = formatdate()
print msg

session.sendmail('catonrug@gmail.com', 'aigars@gmail.com', msg.as_string())