Create an custom SQL Azure Alert that can be initiated by anyone

I am trying to create a custom Azure Alert that sends an email whenever "A SQL Database is created by anyone" in any resource group across my subscription.

Is this even possible?

When I put a * in the "Event Initiated by" box (see image), it wont let me save and throws an error.

When I put a * in the "Event Initiated by" box (see image), it wont let me save and throws an error.

You don't need to put a *

Just leave the field empty and it should take a value of "any" once you're done.

I am trying to create a custom Azure Alert that sends an email whenever "A SQL Database is created by anyone" in any resource group across my subscription.

I see a difference between the wording here and the rule you're trying to configure as per the image in your question. I say this because in the image you seem to select "testserver/testdb" as target under a particular Resource group "SQL-Sandbox".

This configuration will not be equivalent to monitoring across your subscription.

If you want to monitor across your subscription, you can configure your target in 2 possible ways. I quickly tried this out as well in a free subscription and will show screenshots.

1. Target is simply the top level subscription and nothing else.

2. Target is All databases under the top level subscription.

Screenshots for target as per type 1

Screenshot for target as per type 2