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Get Message Delta

Retrieve incremental message changes from a mail folder using delta synchronization.

Updated Aug 27, 2026
Search Tags:#api#email#sync#messages#delta#outlook
One-click install
npx skills add https://github.com/naftiko/microsoft-outlook-sandbox --skill get-message-delta
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: Get Message Delta
Source: https://github.com/naftiko/microsoft-outlook-sandbox/tree/main/skills/get-message-delta
Command: npx skills add https://github.com/naftiko/microsoft-outlook-sandbox --skill get-message-delta

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill efficiently synchronizes changes to messages in a mail folder, preventing the need to re-download entire mailboxes and saving bandwidth and time.

Core Features & Use Cases

  • Incremental Synchronization: Retrieves only new or modified messages since the last sync.
  • Delta Token Management: Utilizes @odata.deltaLink to maintain sync state.
  • Use Case: An email client can use this Skill to update its local message cache by fetching only the messages that have been added, deleted, or modified in the user's inbox since their last check.

Quick Start

Use the get message delta skill to get incremental changes for the inbox folder.

Frequently Asked Questions about Get Message Delta

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I sync Outlook messages incrementally without downloading the entire mailbox?▼

Incremental message sync retrieves only new or modified messages in a specified mail folder using delta synchronization, fetching changes since the last sync to save bandwidth and time. It prevents re-downloading entire mailboxes by utilizing delta tokens.

What is delta synchronization and how does it work for email clients?▼

Delta synchronization is a process that tracks changes to messages within a mail folder using a delta link. It allows email clients to update local caches by fetching only added, deleted, or modified messages since the previous check.

How do I use skip tokens for pagination during message delta sync?▼

You can use skip tokens for continuous synchronization and pagination alongside delta tokens. These tokens allow the delta sync process to retrieve incremental changes across large mail folders without losing state between requests.

Do I need a mail folder ID to retrieve incremental message changes?▼

Yes, a mail folder ID is required to retrieve incremental message changes. The delta synchronization process operates within a specified mail folder to identify and fetch only the new or modified messages.

What is the best way to maintain sync state for an Outlook email client?▼

Maintaining sync state requires utilizing the delta link returned during synchronization. This link tracks the current sync state, allowing subsequent requests to fetch only the messages that have changed since that specific point.

Can I update a local message cache by fetching only modified messages?▼

Yes, you can update a local message cache by fetching only modified messages. The delta sync mechanism identifies messages that have been added, deleted, or modified in the user's inbox since the last check, reducing data transfer.

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