Improvement
Download Inbox for Android from Google Play
Open the Konektor Inbox page on Google Play from the landing page or the mobile Inbox conversation list.
The landing page has a Konektor Inbox download link for Android on desktop and phones. The mobile Inbox conversation list also has a Google Play link, including in the PWA.
The link opens the application page in a new tab. The download message stays outside conversations and does not cover the message field. You can continue to use the Inbox in your browser.