Finding it difficult where to start?
You've come to the right page!
We only have the web app for Titan email (https://app.titan.email/).
That being said you can always download the Titan email app on your Mobile devices.
The Desktop app is not available at the moment. If we do publish the app we will update it in our web app so that you can directly download the app.
Android: https://play.google.com/store/apps/details?id=email.titan.app&hl=en_IN&gl=US
iOS: https://apps.apple.com/us/app/titan-business-class-email/id1486741447