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Outlook Permalink

by Richard Kaplan
Turn the current Outlook 365 / Outlook-on-the-web message into a stable permalink and open it in a new browser tab.
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Unlisted Extension

This extension is published on Richard Kaplan's page but is not listed in the main directory index.

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Outlook Permalink

Turns the current Outlook 365 / Outlook-on-the-web message into a stable, permanent permalink and opens it in a new browser tab.

How to use

In Outlook 365 / OWA, open the message you want a permanent link to. Select any small bit of text on the open message to summon PopClip, then click the link action. The extension reads the full current-tab URL, rewrites the temporary

https://<host>/mail/<folder>/id/<ID>

URL into the stable permalink form

https://<host>/mail/deeplink/read/<PATH_ID>?ItemID=<ID>&exvsurl=1

and opens it in a new tab in the browser you're already using. You don't have to highlight the long URL yourself — a single selected character anywhere on the page is enough to bring up PopClip.

If the current tab isn't an Outlook message URL, the action shows a failure indicator and does nothing. If the tab is already a permalink, it is returned unchanged (the transform is idempotent).

Privacy

This extension sends no data anywhere. It reads only the current browser tab's URL, rewrites it locally on your machine, and opens the result. There is no network request, no telemetry, and no analytics of any kind.

Supported hosts

  • outlook.cloud.microsoft
  • outlook.office.com
  • outlook.office365.com

Notes on the ID transform

The temporary message ID is URL-encoded in the address bar. When building the path segment of the permalink, encoded characters are mapped to hyphens. The %2F (/) → - mapping is confirmed against a real Outlook example. The %2B (+) → - mapping is a base64url extrapolation — Outlook message IDs are base64-derived, so + is treated the same way as /. The original encoded ID is preserved verbatim in the ItemID query parameter.

Author

Richard Kaplan, Kaplan Life Care Planning — rkaplan@kaplanlifecareplan.com

Changelog

  • 2026-09-06: Initial release.
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