How to SendGrid in Python

The parent organization for SendGrid (a customer communication platform for transactional and marketing email) is Twilio.

Mainly the task is to send emails in a dynamic form. This tends to minimize complexity and time consumption.

Initially, we will have to set up the personal detail to sign in, and then you will get a dashboard with multiple features (after your account is verified via email). You can send emails easily by going to the Marketing section and then to the Sender section.

The best experience is only achieved if you have a two-factor authenticated account. Otherwise, your account goes under a review phase, which might take a lot of time.

In the next section, we will point down the steps of handling the account creation detail. Follow up the steps one by one.

Make sure you have saved the API key somewhere safe. Technically, it is shown explicitly viewed once.

In the next part, you will set up the sender email.

There might be a confirmation mail sent to the mail for securing the mail you added as sender.

For authentication, you can use your contact number. If you are facing any problems, you can download Google Authy and use the contact number you will use in Authy.

This passive process might save you.

But in this phase, if you send an email, the sender will have to check the mail every time to confirm. The following coding section will show how we can use the API key to send emails to multiple receivers.

Use the SendGrid API Key to Send Multiple Emails

Initially, we will have to create a project folder on our local computer. Also, we will initiate a Python virtual environment.

You must open the terminal/cmd in that folder to create it. Enter the following commands.

python -m venv YourFolderName
cd YourFolderName

We will create a script file in this folder (folder name we used: sendgrid). We created main.py as our script file. Next, we will install the dependencies.

Before that, the virtual environment needs to be activated. So, in the sendgrid folder, we will open the terminal and follow up on the commands.

Scripts\activate
pip install sendgrid
pip install python-dotenv

Now create a .env file (the file to store the environment variable). And there, we will keep the following piece of code.

export API_KEY=YOUR_SENDGRID_API_KEY

Here, in the API_KEY variable, we will keep the previously saved API key from the SendGrid website. Next, we will go for the coding section.

Code Snippet:

import os
import dotenv
from sendgrid import SendGridAPIClient
from sendgrid.helpers.mail import Mail, Email, To, Content

dotenv.load_dotenv()

sgc = SendGridAPIClient(api_key=os.environ.get("API_KEY"))
from_email = Email("sender@example.com")  # Change to your verified sender
# Change to your recipient
to_email = [To("receiver1@example.com"), To("receiver2@example.com")]
subject = "Sending with SendGrid is Fun"
content = Content("text/plain", "and easy to do anywhere, even with Python")
mail = Mail(from_email, to_email, subject, content, is_multiple=True)
# is_multiple is used to specify that the mail has multiple recipients

# Get a JSON-ready representation of the Mail object
mail_json = mail.get()

# Send an HTTP POST request to /mail/send
try:
    response = sgc.client.mail.send.post(request_body=mail_json)
    print(response.status_code)
    print(response.headers)
except Exception as e:
    print(e)

The dotenv will import the API key as a dictionary, and after calling it, we will see the update in the website dashboard in every transmission. We have sent multiple emails in one run.

The output shows the preview we will have in the SendGrid dashboard and activity feed.

Output: