Message Retraction Workflow for Recipient Notification Removal

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Solution Overview

Problem

Users often desire to retract or 'un-send' messages sent to incorrect recipients or with errors, but existing messaging systems lack a mechanism to efficiently cancel or undo the transmission of messages.

Innovation Solution

A messaging system that allows users to request the un-sending of messages, retracting notifications from recipient devices, clearing message data from memory, and providing message cancellation notifications, with options to select specific recipients and manage message status.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a message is sent to a recipient, then communication is established and message delivery is completed, but the user cannot retract or undo the message transmission if sent to incorrect recipient or with errors

Engineering Contradiction:

Improvemessage retraction capabilityVSAvoidmessage delivery finality

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The system performs preliminary action by providing a cancellation opportunity window before the message is fully processed and stored on the recipient's device. The server intercepts cancellation requests before final delivery, allowing the sender to retract the message while it is still in transit or pending delivery state.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The messaging server acts as an intermediary between the sender and recipient devices. It receives and processes cancellation requests from the sender, then communicates with the recipient device to remove or block the message notification, effectively mediating the message retraction process without requiring direct access to the recipient's device storage.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If message cancellation is implemented system-wide, then all messages can be retracted, but it increases system complexity and processing overhead

Engineering Contradiction:

Improvecancellation coverage scopeVSAvoidcancellation system structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The cancellation mechanism applies local quality by implementing selective cancellation based on message state and recipient device status. The server evaluates individual message conditions (e.g., whether the message has been delivered, read, or is still in transit) and applies cancellation only to eligible messages, rather than implementing a blanket cancellation system for all messages universally.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The system implements partial action by providing cancellation capability for specific message states rather than all possible states. The server processes cancellation requests only for messages that meet certain criteria (e.g., not yet delivered or recently delivered), leaving other message states unchanged, thus balancing functionality with system simplicity.

Inventive Principle:

Principle #16Partial or excessive action

3Object-affected harmful factors

If message data is cleared from recipient device memory, then privacy is protected and errors are reduced, but data loss occurs and users cannot recover accidentally deleted messages

Engineering Contradiction:

Improveprivacy protectionVSAvoidmessage data recoverability

Core Design Contradiction:

Object-affected harmful factorsVSLoss of information

Solution Approach 1:

The system applies preliminary anti-action by preventing the harmful effect of unwanted message delivery through cancellation before the message is permanently stored or displayed to the recipient. The server intercepts and blocks the message delivery process, so the recipient never receives or views the incorrect or erroneous message, thereby protecting privacy without causing information loss.

Inventive Principle:

Principle #9Preliminary anti-action

4Measurement precision

If selective un-sending to specific recipients is allowed, then precision in error correction is improved, but the interface complexity and user interaction steps increase

Engineering Contradiction:

Improverecipient selection accuracyVSAvoidcancellation interface simplicity

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The system applies inversion by reversing the traditional messaging flow. Instead of the recipient actively managing their inbox and deleting unwanted messages, the sender is empowered to initiate the cancellation action. The interface presents the sender with a list of recipients who received the message, allowing the sender to select which recipients should have the message removed, thus inverting the control dynamic from recipient-side to sender-side management.

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS20260046269A1Messaging system

Publication Date: 2026.02.12 SNAP INC

AI summary

The present invention relates to a messaging system configured to: receive a request to generate a message at a first client device; cause display of a message notification within an interface of a second client device, wherein the message was addressed to a recipient of the second client device; receive a request to un-send the message from the first client device; and remove the message notification from the interface at the second client device in response to the request to un-send the message, according to some example embodiments.