What does 우편함 look like on SoftBank?

On SoftBank it is the design shipped in 2014, shown above at full size. Older revisions are listed beneath it.

When did SoftBank add 우편함?

SoftBank first drew 우편함 in 1999, released 1999년 1월 1일.

SoftBank Corp. has shipped 8 versions of 우편함. Each is dated, so you can see when the design changed.

SoftBank

SoftBank Corp. has drawn 우편함 8 times. Every revision SoftBank has shipped is below, newest first.

What does 우편함 look like on SoftBank?: On SoftBank it is the design shipped in 2014, shown above at full size. Older revisions are listed beneath it.
When did SoftBank add 우편함?: SoftBank first drew 우편함 in 1999, released 1999년 1월 1일.
How many times has SoftBank redrawn 우편함?: SoftBank Corp. has shipped 8 versions of 우편함. Each is dated, so you can see when the design changed.

SoftBank artwork for this emoji spans 1999 to 2014.