I wanted to see some alerts that occur in my Productions in a Mobile Device, I came across Pushover.net recently that although has an upfront cost $5 you can send as many messages as you like after that, there is a 7 day free trial to check it out.
To Integrate this with a production I did the following.
Create an account and set up a device on https://pushover.net/
Record the following API Keys from the web site on the main page you will see
Your User Key example: ueh3t7478foi3ruf2ogb3syu4fs34s
You then need to create an application I set
Name : Cache
Type : Application
And left the oter settings blank.
This will give you a
API Token/Key example: auh000es1aaaa7ddeb3i4jfkgwswero
I then created this class to add an operation to the production, replace your Key, token and device name int