Sysadmins

Send Emails using Python and Sendgrid using SMTPlib

Ruan Bekker -

Quick tutorial on how to send emails using Python and smtplib.

Sendgrid

Sendgrid offers 100 free outbound emails per day, sign up with them via sendgrid.com/free, create a API Key and save your credentials in a safe place.

You first need to verify your account by sending a mail using their API, but it's step by step so won't take more than 2 minutes to complete.

Python Code

Once the verification is completed, our Python Code:

import smtplib
from email.MIMEMultipart import MIMEMultipart
from email.MIMEText import MIMEText

mail_from = 'Ruan Bekker <ruan@ruanbekker.com>'
mail_to = 'Ruan Bekker <xxxx@gmail.com>'

msg = MIMEMultipart()
msg['From'] = mail_from
msg['To'] = mail_to
msg['Subject'] = 'Sending mails with Python'
mail_body = """
Hey,

This is a test.

Regards,\nRuan

"""
msg.attach(MIMEText(mail_body))

try:
    server = smtplib.SMTP_SSL('smtp.sendgrid.net', 465)
    server.ehlo()
    server.login('apikey', 'your-api-key')
    server.sendmail(mail_from, mail_to, msg.as_string())
    server.close()
    print("mail sent")
except:
    print("issue")

When I ran the code, I received the mail, and when you inspect the headers you can see that the mail came via sendgrid:

Received: from xx.xx.s2shared.sendgrid.net (xx.xx.s2shared.sendgrid.net. [xx.xx.xx.xx])

Resources:

Great post on SSL / TLS:

Enjoy :D