Outbox Tray Emoji

A paper desk tray with a red arrow pointing up. 📤 is the outbox, the send button, the upload, the thing-goes-out emoji. Anywhere a message, file, or document is leaving your device, this tray shows up.

The imagery predates computers by nearly a century. The office "out-tray" dates to around 1917, a physical wire or wooden basket where a secretary would stack finished letters for the runner to collect and mail. When email clients started in the 1960s they borrowed the metaphor wholesale. K.E. Boulding famously described executives in 1958 as "grinding sentences into different sentences in his Out box in the manner of a mill grinding wheat into flour" (Buttondown's inbox history).

By 1984, Alaska's Department of Education email system Mailway used digital "in and out boxes in tandem." Think Technologies' 1987 InBox client rendered it with a postage stamp and a paperclip. The tray you see in 📤 today is the direct visual descendant.

Approved in Unicode 6.0 (2010) as U+1F4E4U+1F4E4, added to Emoji 1.0 in 2015. Across Apple, Google, Samsung, and Microsoft the tray stays roughly the same: paper sheets stacked inside, a red or orange up arrow floating above.

📤 is the "I just sent it" emoji. It punctuates the end of an email thread, a file upload, a submission, a deliverable. "Just sent the draft 📤" carries the same energy as dropping a mic.

On X and LinkedIn, 📤 commonly flags announcements and content drops, the visual cue that something new is going live. TikTok creators use it for "posting this and leaving" captions. Reddit mods and Slack users lean on it for shipping notes, especially in developer threads where "shipped 📤" reads as "deployed to production."

In professional email and Outlook-flavored work chats, the emoji quietly signals hand-off: the task is no longer in my court. Paired with a clock 📤⏰ it becomes "sent before deadline." Paired with ✅ it means the submission is done and dusted.

There's a small subculture of software engineers who see 📤 and immediately think of the transactional outbox pattern, a distributed systems technique where you write events to a local "outbox" table to guarantee at-least-once delivery to a message broker. Different universe, same metaphor, same emoji in the documentation.

1. 2010Approved as part of Unicode 6.0 alongside 📥 as a matched pair of office tray emojis.
2. 2015Added to Emoji 1.0, making 📤 a cross-platform standard rather than a vendor-specific icon.
3. 2017Apple and Google converge on similar designs: neutral paper tray, red-orange up arrow above, clean minimalist style.
4. 2020Microsoft's redesign for Windows 11 introduces a more 3D look with softer shading while keeping the red arrow.
5. 2023X (Twitter) retains Twemoji design as Jack Dorsey's Bluesky and other platforms begin licensing Twemoji under permissive terms.

• •The word "out-tray" predates the computer by more than four decades. It enters English around 1917, followed by "in-basket" in 1940 and "inbox" in 1958. The first documented digital "outbox" appeared in Alaska's Mailway email system in 1984.
• •As of 2025, 376.4 billion emails are sent per day worldwide. Every single one of them starts life in an outbox of some kind. That's roughly 4.3 million emails queued up every second, 24 hours a day.
• •About 49% of those emails are spam, which means the global 📤 outbox is grinding out around 162 billion junk messages daily before anyone even reads them.
• •In distributed systems, the transactional outbox pattern is a real engineering technique: instead of sending a message directly to a queue, you write it to a database "outbox" table in the same transaction as your business data, then a background worker delivers it. Same metaphor, same guarantee: once it's in the outbox, it will leave.
• •K.E. Boulding wrote in 1958 about executives "receiving sentences and paragraphs in his In box and grinding them into different sentences and paragraphs in his Out box in the manner of a mill grinding wheat into flour." The mill-grinding-wheat framing describes modern inbox overload pretty well, 68 years later.
• •The 1987 Think Technologies InBox email client displayed messages on a digital notepad complete with a postage stamp and a paperclip for enclosures. Skeuomorphism in 1987 looked a lot like what we'd later call "emoji design."
• •Unicode considers 📤 an "objects" emoji in the mail subcategory. It's one of only two tray emojis in the standard, the other being 📥. Every other mail emoji is either an envelope or a mailbox.