What does 郵便ポスト 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 郵便ポスト?

HTC first drew 郵便ポスト in Sense 7, released 2015年3月30日.

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

HTC

HTC Corporation has drawn 郵便ポスト 2 times. Every revision HTC has shipped is below, newest first.

What does 郵便ポスト 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 郵便ポスト?: HTC first drew 郵便ポスト in Sense 7, released 2015年3月30日.
How many times has HTC redrawn 郵便ポスト?: HTC Corporation has shipped 2 versions of 郵便ポスト. Each is dated, so you can see when the design changed.

HTC artwork for this emoji spans 2015 to 2016.