Email Expiration Time Header for Automatic Inbox Cleanup

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Solution Overview

Problem

Users face challenges in managing emails with limited lifespans, as existing systems do not effectively automate the deletion of unwanted or sensitive emails, leading to clutter and potential exposure of confidential information.

Innovation Solution

The implementation of an 'Expiration Time' header field in email messages allows users to set a time period for automatic deletion, which can be modified by recipients, ensuring that emails are automatically removed from servers after a specified duration, thereby maintaining privacy and reducing email clutter.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If emails are retained indefinitely in the Inbox, then users can access historical communications and reference information, but the Inbox becomes cluttered and users must manually review and delete dated, unwanted emails

Engineering Contradiction:
Improvenumber of emails retainedVSAvoidease of email management
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

The system performs preliminary action by automatically deleting emails at a predetermined expiration time before users would need to manually review and delete them. The sender sets an expiration time when composing the email, and the system automatically executes deletion at that time without requiring user intervention, thus preventing Inbox clutter before it occurs.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If emails containing sensitive information are retained, then users can reference confidential communications, but there is risk of unauthorized access and privacy exposure

Engineering Contradiction:
Improveinformation securityVSAvoidloss of confidential information
Core Design Contradiction:
ReliabilityVSLoss of information

Solution Approach 1:

The system implements preliminary action by automatically deleting emails containing sensitive information at a predetermined expiration time set by the sender. This proactive deletion occurs before any potential security breach or unauthorized access could occur, ensuring confidential information is not retained longer than necessary while maintaining security reliability.

Inventive Principle:
Principle #10Preliminary action

3Quantity of substance

If mass emailers retain all previous emails in recipients' Inboxes, then recipients can review past communications, but recipients waste time filtering through irrelevant dated emails

Engineering Contradiction:
Improvenumber of emails in InboxVSAvoidtime spent reviewing emails
Core Design Contradiction:
Quantity of substanceVSLoss of time

Solution Approach 1:

The system performs preliminary action by automatically deleting dated, irrelevant emails at their expiration times before recipients would need to review and filter them. This prevents the accumulation of unnecessary emails in the Inbox, thereby eliminating the time recipients would otherwise spend filtering through irrelevant communications.

Inventive Principle:
Principle #10Preliminary action

4Ease of operation

If automatic deletion is implemented without user control, then email clutter is reduced and security is improved, but users lose ability to retain important emails

Engineering Contradiction:
Improveautomation of email deletionVSAvoiduser control over email retention
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The system implements dynamics by allowing the expiration time parameter to be flexible and adjustable. The sender can set the expiration time when composing the email, and the recipient can modify this time before the email is delivered. This dynamic adjustment capability ensures that important emails can be retained while still providing automated deletion for temporary emails, balancing automation with user control.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP2817779B1Time-managed electronic mail messages
Publication Date: 2019.05.15 MICROSOFT TECHNOLOGY LICENSING LLC
  • EP2817779B1 patent drawingFigure 1
  • EP2817779B1 patent drawingFigure 2
  • EP2817779B1 patent drawingFigure 3

AI summary

Systems, method sand computer program products for facilitating the automatic deletion of received emails after a user-selectable time period has elapsed are disclosed. In various embodiments, email messages contain a header field referred to as an "Expiration Time" header field that dictates the length of time the email will reside in a designated Inbox prior to its automatic deletion by an email server. The server is able to automatically delete the received email as long as the email is residing in a folder that is synched to the server. A user receiving the email has access to the Expiration Time Header field and can modify its value if desired and allowed by the sender. The user can move the retrieved email to a folder that is not synched to the server, thus preventing the email from being automatically deleted by the server.