What does Cassetta Delle Lettere 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 Cassetta Delle Lettere?

HTC first drew Cassetta Delle Lettere in Sense 7, released 30 marzo 2015.

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

HTC

HTC Corporation has drawn Cassetta Delle Lettere 2 times. Every revision HTC has shipped is below, newest first.

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

HTC artwork for this emoji spans 2015 to 2016.