Celeb Glow
updates | March 16, 2026

How to get unique ID for emails in outlook to be able to search and retrieve later?

It is troublesome to memo the subject for every important email and sometimes even the subject may be the same for different emails. Is there way to extract a unique ID from emails I received in outlook which is searchable when trying to retrieve the email?

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1 Answer

Each message has a Message-ID header, Usually this ID is assigned by the sender's mail app. The Message-ID is also used for combining threads. To view the Message-ID:

  1. Double-click an email message to open it outside of the Reading Pane.
  2. Click File > Properties, then locate the message headers in the Internet headers area.enter image description here

Message-ID is indeed a unique identifier for each message,but you can't search a message by its Message-ID. More information about Message header in this link:

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