#letterbox
Live, measured metrics for the hashtag #letterbox from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #letterbox
This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.
Day-by-day usage
measured · mastodon.social (Mastodon public tags API) · fetched 2026-10-09 02:28 UTCNo measured public usage for #letterbox in the last 7 days. That is a real result, and a good one to know: this hashtag is wide open right now. We show a dash before we ever show a made-up number. Browse the trending index for tags with live measurements.
Related hashtags
measured · mastodon.social (Mastodon public search API) · fetched 2026-10-09 02:28 UTCNo related tags with measured usage found for #letterbox.
Live pulse
measured · Mastodon tag timeline · fetched 2026-10-09 02:28 UTCNo recent public posts found for #letterbox on Mastodon. Nothing measured, so nothing shown.
What “letterbox” means
Wiktionary · Wikipedialetterbox
- nounA collection point for mail intended for onward delivery, a secure box or receptacle for this purpose.
- verbTo transfer a widescreen motion picture to home video formats while preserving the original aspect ratio, with the placing of black bars above and below the picture area.
A letter box, letterbox, letter plate, letter hole, mail slot or mailbox is a receptacle for receiving incoming mail at a private residence or business. For outgoing mail, post boxes are often used for depositing the mail for collection, although some letter boxes are also capable of holding outgoing mail for a carrier to pick up. Letterboxes or mailboxes use the following primary designs:A slot in a wall or door through which mail is delivered A box attached directly to the building A box mou
“Letter box” on Wikipedia (CC BY-SA) →#letterbox across platforms
every network with a public tag surfaceFollow #letterbox straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.
Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/letterbox