This paper investigates whether a Snapchat user is explicitly notified when they have been blocked by another user. Based on analysis of Snapchat’s official documentation, reverse-engineered behavioral patterns, and empirical user reports, the conclusion is clear: However, blocked users can often deduce the action through indirect signals (e.g., vanished chats, search failures, zero Friend Score). This creates a pattern of “observable but unconfirmed” blocking.
There are some additional signs that may indicate to the blocked person that they have been blocked: if you block someone on snapchat do they know
To block someone on Snapchat: