Spark Email on Twitter: "@paperlessmove in Spark on Mac you can either use CMD+A to select ALL emails in the Smart Inbox or go to Spark Preferences > General > Smart Inbox
Spark Mail – Smart Email Inbox App for iPhone - Free Download Spark Mail – Smart Email Inbox for iPad & iPhone at AppPure
Customize your Smart Inbox | Spark Help Center
Spark Review: Smart Email - MacStories
Spark Mail – Smart Email Inbox - Apps on Google Play
Spark review: iPhone app makes mobile email smarter, not completely different | Macworld
How-To: 50 getting started tips for new Spark users - 9to5Mac