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Create Timer Triggers with Azure Functions and Twilio SMS

Overview | Prerequisites | Tutorial | Additional Resources | Support


Days leading up to a trip to NASA, I created a daily count-down group text for friends! This tutorial will teach you how to use the NASA Astronomy Picture of the Day API, Twilio SMS and Azure Functions Timer Trigger to send a text message daily.

Language: Python

APIs/Product(s): NASA Open APIs, Twilio SMS, Azure Functions Timer Trigger and Visual Studio Code


Sign Up for Twilio and Get a Phone Number

In order to work with Twilio’s products, you’ll need to sign up and purchase a voice enabled phone number. If you’re new to Twilio, you can start with a free trial. For further assistance on signing up and purchasing a phone number, visit Twilio.

Generate a NASA API Key

You'll need an API Key to use the NASA Astronomy Picture of the Day API. It's FREE and includes 1000 requests per minute.

Sign Up for an Azure Subscription

You can create a FREE Azure Subscription to setup your Azure Function. The free trial will provide you with 12 months of free services.

Access the GitHub Repository

You will need the files in this repository as they will be used throughout the tutorial.


You can find the full tutorial on how to create this app by visiting the Computer Club website.

Additional Resources

Twilio Programmable SMS Quickstart - Python

Azure Functions Tutorial


Have a question or issue accessing a file or completing the tutorial? Feel free to send a message over to

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