Outlook.com mailto

Name: Outlook.com mailto
Rating: 4.6364 (22 reviews)
Author: Wesley Branton

By: Wesley Branton

Add Outlook.com as a default email provider for all mailto links.

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Install

Features & Capabilities

The Outlook.com mailto Chrome extension allows users to configure their browser to open all mailto links directly with Outlook.com. Once installed, mailto links on any website will automatically open the Outlook.com interface and prefill the relevant email fields, providing a seamless email experience. This extension is unofficial and is not affiliated with Microsoft. It offers a straightforward solution for users preferring Outlook.com as their default email handler without changing system-wide settings.

Designed to enhance productivity and streamline email management, this extension modifies browser settings to redirect mailto links to Outlook.com with just a click. For more details about the permissions it requires, users can consult the provided documentation link.

User Growth & Download Statistics

Add-on Communication

By:

Daily users:

Rating:

Version:

2.7.1 Last updated: 2023-06-22

Version code:

5584126

Creation date:

2019-05-26

Risk:

Permissions:

storage
menus
tabs
webRequest
webRequestBlocking
*://outlook.com/send/*

Size:

48.55KB

Email:

ad*****@wesleybranton.com

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-05

Compare stats and ranking:

Ranking

# 2,185 ▼ 21

Other rankings

#252 in Social & Communication ▼ 2

#13 in disclaimer keyword 9 ▼ 1

#27 in hotmail keyword 6

#47 in mail keyword 57 ▲ 1

#49 in provide keyword 51 ▲ 1

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For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Wesley Branton

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/outlook-com-mailto/

Email:

ad*****@wesleybranton.com

Website:

https://github.com/WesleyBranton/Outlook.com-mailto/issues

User Reviews

Users appreciate this Firefox add-on for effectively setting Outlook.com as the default mailto handler, especially after Firefox removed original mailto support. It generally works on first try and addresses a long-felt need. However, several users notice it opens a new tab rather than an existing mailbox tab and sometimes requires repeated sign-ins. Some experienced an initial issue with the composer window not opening correctly, which resolved after browser restart. A Firefox warning about it not being a recommended extension also raised some concerns among users.

Pros

Effectively sets Outlook Web as the default mailto handler in Firefox.
Easy to use and works as described, mostly on first try.
Highly appreciated by users who lost original mailto functionality in Firefox.
Developer responsive to user feedback and issues.
Provides a solution for opening mailto links directly in Outlook.com.

Cons

Sometimes opens a new tab instead of using an already open Outlook mailbox tab.
May require users to sign back in each time a mailto link is clicked, especially if using outlook.office.com.
In some cases, initially opens Outlook.com homepage instead of mail composer (resolved after restarting browser).
Not recommended extension warning shown by Firefox causing user concern.

Recent reviews

by Bu*****, 2025-05-18

by Fi*****, 2025-03-27

by Fi*****, 2025-03-15

View all user reviews ›

Is Outlook.com mailto Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Outlook.com mailto requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Outlook.com mailto has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
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