Readdle has been working on bringing its email app called Spark to the Mac for a while now, and this week the company started taking sign-ups for users who want to test the beta version.

Spark for Mac will be an alternative email client to Apple’s built-in Mail app with better support for Gmail and a smart inbox for presenting important messages first.

Spark first debuted on the iPhone and Apple Watch last year with deep integration with third-party services. Spark for iPad followed at the start of this year.

Spark for macOS will complete the suite which is especially critical for Mac users investing fully into Readdle’s email workflow.

Mac users who want to try Spark for macOS can sign up at sparkmailapp.com/beta to join the waiting list. Readdle says over 3500 sign-ups have already been collected as the first beta is expected to go out early next week. 

Spark for iPhone, iPad, and Apple Watch is a universal app that you can download for free on the App Store. Readdle also makes a ton of other productivity tools for the Mac and iOS.