Simple and effective I can define the alert level I want to notified at. The SWPC forecast is a particularly good way to work out the chance of seeing an aurora too.
Simple, but unique Just hope this allows me to see one now!
Get aurora alerts Notifies me when the alert level goes up
Use Material Design
GroupEmail makes it easier to email a group of your GMail contacts in one go.
An implementation of Unix Fortune; amusing quotes inc. Star Trek and Linux.