Adding a trigger to your AWS Lambda Function

This is probably going to be the shortest section in this tutorial series. Follow the steps below to create add a trigger to your AWS Lambda function.

• On the left of designer, click “Add Trigger”, as shown below

AWS Lambda Designer

• Choose a trigger, we’re using “ CloudWatch Events/EventBridge”
• Choose a rule/ Create a new rule (We’ll create a new one)
• Give it a name and choose a type (We’ll choose a “Schedule expression”)
• Give it an cron expression (We’re using “cron(15 04 15 * ? *)” — Monthly on the 15th at 4:15AM GMT)
• You can learn more about cron expressions here
• Hit save and you should be all set, see our configuration below:

AWS CloudWatch Event Trigger Configuration

Once again, congratulations, you’ve created your AWS CloudWatch Event Trigger.

In the next section, we’ll create a spreadsheet and service account credentials we’ll use to programmatically access the spreadsheet. Click here to go to the next section.

This is tutorial is broken up into 5 parts:

• Introduction
• Sending an email from AWS Lambda
• Adding a trigger to your AWS Lambda function
• Setting Up a Project, Service Accounts and OAuth Credentials
• Integrate Google Sheets to extract mail contents and email addresses