- Make sure that Spark Desktop is installed.
- Open the Mail app.
- Go Mail > Settings at the top, then click General.
- Choose Spark Desktop from the Default email reader menu.
Now, your device will open Spark Desktop when you click an email link or want to email something from other apps.
Note: If you are using Spark on Widnows, at the moment it is not possible to set Spark as a default email client.