What does صندوق بريد look like on Facebook?

On Facebook it is the design shipped in 16.0, shown above at full size. Older revisions are listed beneath it.

When did Facebook add صندوق بريد?

Facebook first drew صندوق بريد in 1.0, released 31 يناير 2014.

Meta Platforms, Inc. has shipped 13 versions of صندوق بريد. Each is dated, so you can see when the design changed.

Facebook 15.0

This is the design Facebook introduced in 3.0, shipped again unchanged. It was not redrawn for this release.

✳ marks a release that redrew this emoji. The rest re-shipped the design unchanged.

What does صندوق بريد look like on Facebook?: On Facebook it is the design shipped in 16.0, shown above at full size. Older revisions are listed beneath it.
When did Facebook add صندوق بريد?: Facebook first drew صندوق بريد in 1.0, released 31 يناير 2014.
How many times has Facebook redrawn صندوق بريد?: Meta Platforms, Inc. has shipped 13 versions of صندوق بريد. Each is dated, so you can see when the design changed.