Fastmail Plus

By: SK

A Firefox extension to make Fastmail web UI more usable and productive

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Install

Features & Capabilities

Fastmail Plus makes Fastmail (https://fastmail.com) web UI easier to use and more productive.

Features:

Change focus using ↑ ↓ ← → cursor keys
Badge notification for unread messages to Inbox
Faster switch between different search modes
Easier button operation in reading pane
Extra shortcut keys (Press ? key to show available shortcut keys)
Fix problem with Japanese IME in default search input
Extra "reply-to" folding
Maximize width
Light/Dark theme support

If you have any ideas or proposals, feel free to reach out on github or on twitter.

https://www.twitter.com/5katkov

User Growth & Download Statistics

Add-on

By:

Daily users:

18 1

Rating:

5.00

(1)

Version:

0.2.16.0 Last updated: 2023-02-07

Version code:

5523517

Creation date:

2022-09-09

Risk:

Permissions:

storage

Content scripts matches:

*.fastmail.com

Size:

8.44MB

Email:

fi*****@skatkov.com

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-18

Compare stats and ranking:

Ranking

# 24,644 ▲ 565

Other rankings

#20 in hotmail keyword 8 ▲ 3#65 in fast vpn keyword 47 ▲ 1#189 in mail keyword 50 ▲ 3

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:

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/fastmail-plus/

Email:

fi*****@skatkov.com

Website:

https://github.com/yohasebe/fastmail-plus

User Reviews

by 退出*****, 2025-04-12

by 退出*****, 2025-03-08

The switchable search box is a killer feature!

by Le*****, 2022-10-04

View all user reviews ›

Is Fastmail Plus 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.

Fastmail Plus requires very minimum permissions.

Risk impact analysis details

High Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
Low ******* ****** ** *** ********* ******** ************

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.

Fastmail Plus 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 **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******