Postbox on Telegram

What it signals here

sticker mapping

Maps to 'message sent' or 'dispatched' sticker packs in postal or office-themed sets.

channel use

Used in broadcast channels to indicate a new newsletter, announcement, or formal communication drop.

group meaning

In group chats, signals that an important group message or document has been sent out.

bot context

Used in bot interfaces to confirm outgoing message dispatch or email notification triggers.

See it elsewhere