What does Open Mailbox with Lowered Flag look like on Noto Emoji?

On Noto Emoji it is the design shipped in 17.0, shown above at full size. Older revisions are listed beneath it.

When did Noto Emoji add Open Mailbox with Lowered Flag?

Noto Emoji first drew Open Mailbox with Lowered Flag in 14.0, released April 29, 2022.

Google Fonts has shipped 6 versions of Open Mailbox with Lowered Flag. Each is dated, so you can see when the design changed.

Noto Emoji 15.0

Noto Emoji shipped a new design for Open Mailbox with Lowered Flag in 15.0, released September 12, 2022. The previous design is shown beside it.

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

What does Open Mailbox with Lowered Flag look like on Noto Emoji?: On Noto Emoji it is the design shipped in 17.0, shown above at full size. Older revisions are listed beneath it.
When did Noto Emoji add Open Mailbox with Lowered Flag?: Noto Emoji first drew Open Mailbox with Lowered Flag in 14.0, released April 29, 2022.
How many times has Noto Emoji redrawn Open Mailbox with Lowered Flag?: Google Fonts has shipped 6 versions of Open Mailbox with Lowered Flag. Each is dated, so you can see when the design changed.