Outlook - Group Similar Emails

Name: Outlook - Group Similar Emails
Rating: 5 (1 reviews)
Author: Ian D Halverson

Simple configurable extension that hides emails visually with duplicate sender/subject in Outlook (when reading pane is not enabled)

As of May 2026, Outlook - Group Similar Emails has 36 users and a 5.00/5 rating from 1 reviews in the Productivity category.

Ian D Halverson Productivity

Chrome Web Store ↗.crx

Users+5.9%

Rating0%

5.00

1 reviews

Reviews0%

Version

2.0

Manifest V3

History

3 snapshots

Tracking since Apr 1, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 1, 2026	34	5.00	1	2.0
Apr 30, 2026	38	5.00	1	2.0
May 27, 2026	35	5.00	1	2.0
Now	36	5.00	1	2.0

Permissions & access

Permissions: storage
Host access: https://outlook.live.com/*, https://outlook.office.com/*, https://outlook.office365.com/*

Screenshots

Outlook - Group Similar Emails screenshot 1

Outlook - Group Similar Emails screenshot 2

Outlook - Group Similar Emails screenshot 3

About

✨ - New features can be requested through Github and I will try to add them.
⚙️ - Various configuration options are available.
ℹ️ - By default, duplicate means the content in the sender and subject columns (as shown in the list of emails) are identical (configurable).
⚠️ This extension only works when the reading pane is disabled (or placed at the bottom).
✏️ - It modifies the subject to show the total number of duplicates (configurable).
⏱️ - It runs the logic every 2 seconds (configurable).
⏹️ - If you need to see/interact with the duplicates, toggle off the extension.
🛠️ - Fixes / new versions take some time to publish, patience is appreciated.
📞 - If you have issues, reach out on Github.