Spam Info Bot

SpamBot's own profile leaves no ambiguity about who runs it: "The official Spam Info Bot by Telegram. Helps users with limited accounts regain the full functionality." This is not a third party interpreting Telegram's rules from the outside — it is Telegram's own tool for one specific, sometimes urgent problem: your account gets automatically flagged as a likely spam source (often after joining too many groups quickly, sending the same message repeatedly, or being reported by other users) and loses the ability to message people who haven't added you as a contact, among other restrictions.

Message it and it tells you your account's current standing and, if you believe the restriction was applied in error, walks you through an appeal. Given its scale — around 34 million monthly users according to its own public profile — it is very likely the single most-used bot in this entire catalog, which makes sense given how many Telegram accounts eventually bump into some form of spam-related limitation.

It sits in this "privacy" subtopic as the standing tool for questions about your own account's status and restrictions within Telegram — a different angle on privacy/security than data-breach checking, but a genuinely first-party, zero-risk one: since Telegram itself runs it, there is no third-party data-handling question to weigh, unlike every other bot in this list.