Email-sending-using-code

Sending the email using python. 3 ways to send emails from your Python app There are three main options for sending email with Python: SMTP, a transactional email service, and a multichannel notifications service.

Below, I’ll review the pros and cons for each option. Then, in the next section, I’ll walk you through three different code tutorials for using each option to send emails with Python.

1. Using SMTP

Python has a built-in module for sending emails via SMTP, which makes getting started with email a piece of cake.

Pros of using SMTP Easy to set up

Highly cost-effective

Platform agnostic

Cons of using SMTP Less secure

No built-in analytics

Longer send times

Long-term maintenance and uptime burden

2. Using a transactional email service

You can also easily integrate third-party transactional email APIs like SendGrid, Mailgun, and AWS SES. If you are planning to send a high volume of emails or need to ensure deliverability, a hosted email API can be a great option and many providers offer a free or low-cost plan to start.

Pros of transactional email services Feature-rich, e.g. analytics High email delivery rates Better email delivery speeds Scalability and reliability

Cons of transactional email services Learning curve for new API

Dependent on third-party intermediary

3. Using a multichannel notifications service

Finally, if you’re planning to notify users on more than one channel, you can use a multichannel notifications service. Courier, for example, gives you one uniform API to notify users over email, SMS, push, and chat apps like Slack and WhatsApp. Plus, you’ll get a drag-and-drop template builder and real-time logs and analytics for all your channels.

Even if you’re only sending emails today, multichannel notifications services can save you time and money. With a platform like Courier, you can easily add new channels, switch email service providers, or even add backup providers without writing any additional code. You get a complete notifications system that can scale with your product’s growth.

Pros of multichannel notifications services Single API for multiple channels

Easy to manage cross-channel delivery

Less code to write and maintain

Cons of multichannel notifications services Additional third-party intermediary

Tutorial: How to send emails using SMTP in Python

You can use Python’s built-in smtplib module to send email using SMTP (Simple Mail Transfer Protocol), which is an application-level protocol. Note that the module makes use of RFC 821 protocol for SMTP. I’ll show you how to use Gmail’s SMTP server for this walkthrough.

Set up a Gmail account for sending your emails. Since you’ll be feeding a plaintext password to the program, Google considers the SMTP connection less secure.
Go to the account settings and allow ++less secure apps++ to access the account. As an aside, Gmail doesn't necessarily use SMTP on their internal mail servers; however, Gmail SMTP is an interface enabled by Google's smtp.gmail.com server. You might find smtp.gmail.com in email clients like Thunderbird, Outlook, and others.
Import smtplib. Since Python comes pre-packaged with smtplib, all you have to do is create a Python file and import smtplib into it.
To create a secure connection, you can either use SMTP_SSL() with 465 port or .starttls() with 587 port. The former creates an SMTP connection that is secured from the beginning. The latter creates an unsecured SMTP connection that is encrypted via .starttls().

To send email through SMTP_SSL():

Tutorial: How to send emails using a transactional email service in Python

If you need to send a high volume of transactional emails or optimize deliverability, consider using a transactional email service. There are many to choose from, including Amazon SES, Mailgun, and Postmark, and the vast majority support Python.

In this tutorial, I’m going to use SendGrid, one of the most popular email APIs. What sets a service like SendGrid apart from SMTP are the out-of-the box features. SendGrid offers easy integration with a simple API, email analytics, round-the-clock support, and high deliverability rates.

Setting up SendGrid with Python is a fairly simple process:

1.Create an account with SendGrid. SendGrid’s free plan includes 100 emails per day.

2.Generate and store a SendGrid API key and provide full access to Mail Send permissions.

3.Create a Python script and start using the API.

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