How to receive an alert email when an event is about to start soon?

Step 1: Sign into your account via https://portal.office.com/

Step 2: Navigate to Power Automate or open https://flow.microsoft.com/

Step 3: Click on Create on the left pane.

Step 4: Select Automated Cloud Flow under Start from blank section.

Step 5: Select When an upcoming event is starting soon under the Choose your flow’s trigger section.

Step 6: Click Next step button and click on Mail and then select Send an email notification.

Step 7: Enter the To address, Body and Subject and then click Save.