You can set up Apple Calendar to send you an email reminder for any event. You can go to any event on your calendar, add an alert, and there is a drop down list of email addresses to choose from. But how do you change the default email address? I was looking everywhere for where to change the email address that Apple Calendar alerts get sent to.

The answer: change your ‘work’ or ‘home’ address in your own contact in Apple Address Book application (Contacts), not in the Calendar Application.

Mail is likely the default email app on your Mac, but just in case you have others downloaded, you can set the default reader. Here's how: Launch Mail from your dock or the Finder. Click Mail in the menu bar at the top of the screen. Click Preferences. Click the dropdown next to Default Mail Reader. Click the app you'd like to set as the default.

There’s also some good comments below – have a read!

To change this email address, you need to edit your ‘work’ or ‘home’ email address in Apple Address book!

1. Exit from the Calendar app and open the ‘Contacts’ app.

2. Create a new entry with your email address. (If you don’t already have one).

I Received An Email From Re : [ Reminder…

3. Go to the menu called ‘Card’ and select ‘Make this My Card’.

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This email address will now appear as the default email address in any new events in Apple Calendar.