Badge App Icon
If you do not see this preference in Textra SMS, but you do have other apps (installed from Google Play, as opposed to System apps) that show the badge icon then please send us a screenshot example (showing a badge on a Google Play installed app icon) along with your firmware version and type of phone so we can fix it.
If your device does not support badging of Google Play installed apps, then you'll need to use a custom launcher app to do the badging.
Textra SMS has been tested and confirmed as working with the following custom launcher apps:
* NOVA (with Tesla Unread).
* ADW Launcher.