HTC releases its Messaging app in the Google Play Store

However, neither OnePlus' weather app nor HTC's messaging app can be installed on other phones but those launched by these two companies. The release of HTC Messaging in the Google Play Store will make it easier for the Taiwanese company to update the app without having to push software updates for specific HTC handsets.
Also, HTC Messaging supports thread view in conversational style and search by keywords. Users can even set block list for spam messages.
You can find the link to the app's listing on Google Play Store, but as the name suggests, HTC Messaging is only compatible with HTC smartphones.