#postmarks
Live, measured metrics for the hashtag #postmarks from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #postmarks
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.online (Mastodon public tags API) · fetched 2026-09-27 09:51 UTC0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · mastodon.online (Mastodon public search API) · fetched 2026-09-27 09:51 UTCLive pulse
measured · mastodon.online (Mastodon tag timeline) · fetched 2026-09-27 09:51 UTCEverything below is measured over the latest 40 public posts (spanning ~22150 hours).
Posting hours (UTC) — busiest: 14:00
Languages: English (36) · German (2)
Avg boosts / post: 1.3
Top of the latest posts
Updated #USPS policy says #postmarks might not indicate the first day the Postal Service received the mail, but rather the day it was handled in one of its processing centers. Those centers are increasingly likely to be further away from ce
Ah of course! I forgot that @casey worked there and also that's what #Postmarks @updates is on and also everyone's federated bookmarks that were linked to that domain will now probably be sorta messed up. https://sharetron.com/@casey/114552
Casey talking about #Postmarks (@updates) at the social web room now!
What “postmarks” means
WikipediaA postmark is a postal marking made on an envelope, parcel, postcard or the like, indicating the place, date and time that the item was delivered into the care of a postal service, or sometimes indicating where and when received or in transit. Modern postmarks are often applied simultaneously with the cancellation or killer that marks postage stamps as having been used. Sometimes a postmark alone is used to cancel stamps, and the two terms are often used interchangeably. Postmarks may be applied
“Postmark” on Wikipedia (CC BY-SA) →#postmarks across platforms
every network with a public tag surfaceFollow #postmarks 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/postmarks