Email automation using Python and Google Sheet

send_email.py

# we need these modules to send the emails
import smtplib
import ssl

# these modules will allow you to create the client and interact
# with Google Sheet
import gspread
from oauth2client.service_account import ServiceAccountCredentials

# these modules will help you create the HTML emails
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart

# create client using credentials downloaded from Google Cloud Platform
scope = ['https://spreadsheets.google.com/feeds', 'https://www.googleapis.com/auth/drive']
credentials = ServiceAccountCredentials.from_json_keyfile_name('path/to/your/client_secret.json', scope)
client = gspread.authorize(credentials)

# specify the correct name of the Google Sheet
sheet = client.open('email-automation-test').sheet1

# Get all values in the Google Sheet
row_values_list = sheet.get_all_records()

# specify email and GMail App Password
from_email = '[email protected]'
password = 'YOUR GMAIL APP PASSWORD'

# iterate on every row of the Google Sheet
for row_value in row_values_list:
  
  # we are dealing with dictionary, so you can use get method
  name = row_value.get('name')
  token = str(row_value.get('token'))
  to_email = row_value.get('to_email')
  
  # specify the path to your html email
  html = ''.join(open('path/to/your/html').readlines())
  
  # replace the variables with the values in the sheet
  html = html.replace('${name}', name)
  html = html.replace('${token}', token)
  
  # set up from, to and subject
  message = MIMEMultipart('alternative')
  message['Subject'] = 'Token Reminder to Pet My Dogs'
  message['From'] = from_email
  message['To'] = to_email
  
  # create MIMEText objects
  part1 = MIMEText(html, 'html')
  
  # attach the text/html part to the MIMEmultipart message
  message.attach(part1)
  
  # create a secure SSL context
  context = ssl.create_default_context()
  
  # log in and send the email
  with smtplib.SMTP_SSL('smtp.gmail.com', 465, context=context) as server:
    server.login(from_email, password)
    server.sendmail(from_email, to_email, message.as_string())