AppSumo offering Postbox for USD 20

AppSumo is currently running a deal on the Postbox email client app.

The app is available for USD 20. Regular pricing is USD 30.

I have been a big fan of Postbox though I stopped using it when they discontinued to free version supported by ads.

If you are looking for an alternative to Mozilla Thunderbird and similar apps, this could be an app to try out.