What does Briefumschlag look like on HTC?

On HTC it is the design shipped in Sense 8, shown above at full size. Older revisions are listed beneath it.

When did HTC add Briefumschlag?

HTC first drew Briefumschlag in Sense 7, released 30. März 2015.

HTC Corporation has shipped 2 versions of Briefumschlag. Each is dated, so you can see when the design changed.

HTC

HTC Corporation has drawn Briefumschlag 2 times. Every revision HTC has shipped is below, newest first.

What does Briefumschlag look like on HTC?: On HTC it is the design shipped in Sense 8, shown above at full size. Older revisions are listed beneath it.
When did HTC add Briefumschlag?: HTC first drew Briefumschlag in Sense 7, released 30. März 2015.
How many times has HTC redrawn Briefumschlag?: HTC Corporation has shipped 2 versions of Briefumschlag. Each is dated, so you can see when the design changed.

HTC artwork for this emoji spans 2015 to 2016.