How To Test Sendgrid Api Key

The SendGrid service is widely utilized for sending electronic messages. It offers a robust API that allows for the automated sending of emails from your applications. This post will assist you in verifying the functionality of your SendGrid API key.


Before we proceed, ensure that you have the following:

  • A SendGrid account – if you don’t have one, sign up here
  • A SendGrid API Key – after logging in, you can generate this from the dashboard. Remember to save this securely since you won’t be able to access the full key again.
  • Postman – a tool to test APIs. Download it from here if you don’t have it installed.

Step by Step Guide

1. Open Postman

After successfully installing Postman, launch the application.

2. Create a New Request

Select the New button and choose Request from the dropdown menu.

3. Set Up the Request

Input the following settings:

  • HTTP Method: POST
  • URL:

4. Include the SendGrid API Key

Go to the Headers tab and input the following:

  • Key: Authorization
  • Value: Bearer YOUR_API_KEY

Replace YOUR_API_KEY with your actual SendGrid API Key.

5. Input the Email Details

Go to the Body tab, select raw and JSON. Input a JSON object that describes the email details. Here’s an example:

        "personalizations": [{
            "to": [{
                "email": "[email protected]"
        "from": {
            "email": "[email protected]"
        "subject": "Hello, World!",
        "content": [{
            "type": "text/plain",
            "value": "Hello, World!"

Remember to replace the email addresses and content with your own.

6. Send the Request

Click on the Send button to send the email.

7. Check the Response

If everything is set up correctly, you will receive a 202 Accepted status. This means that your API key is working and the email was successfully sent.


Testing your SendGrid API Key ensures that your emails are being sent successfully. This step-by-step guide has shown you how to do this using Postman. Happy testing!