What does صندوق بريد 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 صندوق بريد?

HTC first drew صندوق بريد in Sense 7, released 30 مارس 2015.

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

HTC

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

What does صندوق بريد 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 صندوق بريد?: HTC first drew صندوق بريد in Sense 7, released 30 مارس 2015.
How many times has HTC redrawn صندوق بريد?: HTC Corporation has shipped 2 versions of صندوق بريد. Each is dated, so you can see when the design changed.

HTC artwork for this emoji spans 2015 to 2016.