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Manage and customize your product experience with settings, add-ons, and more.

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Access AI chatbots in Firefox

Thunderbird and Junk / Spam Messages

Make Firefox your default browser on Windows

Manage local site storage settings

Change Firefox options, preferences and settings

Customize items on your Firefox New Tab page

Customize Firefox controls, buttons and toolbars

Block generative AI features with Firefox AI controls

Sponsors on the home page and New Tab page

Make Firefox your default browser

View site information with Page Info

Firefox Password Manager - Alerts for breached websites

Automatically fill in credit card and payment method data on Web forms

OAuth2 Authentication for Yahoo, AOL and ATT

Global Privacy Control

Watch DRM content on Firefox

Web Push notifications in Firefox

Customize keyboard shortcuts in Firefox

Pop-up blocker settings, exceptions and troubleshooting

How to manage your camera and microphone permissions with Firefox

Firefox's performance settings

Connection settings in Firefox

Scan QR codes in Firefox for iOS

Import data from another browser

Back up and restore information in Firefox profiles

Personalized extension recommendations

Compacting folders

How to set the home page

How to set up Firefox Sync in Firefox for Android

Firefox translation for Android

Automatically fill in your address on web forms

Filelink for Large Attachments

Manage my default search engines in Firefox for Android

Restore bookmarks from backup or move them to another computer

On-device AI models in Firefox

Export Firefox bookmarks to an HTML file to back up or transfer bookmarks

Restore previous session - Configure when Firefox shows your most recent tabs and windows

How do I use the Firefox spell checker?

Import settings and data into Thunderbird

JavaScript settings and preferences for interactive web pages

Allow or block media autoplay in Firefox

Import bookmarks and other data from Google Chrome

Manage Firefox search settings

Multi-Account Containers

Turn picture-in-picture mode controls on and off

Open Firefox automatically when you start your computer

Use the sidebar to access tools and vertical tabs

Restore the Menu bar in Firefox

Control whether Firefox automatically fills in forms

Recommendations from Firefox

Add the Search bar to your Firefox toolbar

Bookmarks Toolbar - Display your favorite websites at the top of the Firefox window

Thunderbird and Gmail

Setting Firefox as the default browser does not work - What to do

Find and install extensions on Firefox for Android

Refresh Firefox - reset add-ons and settings

Signatures

Message threading in Thunderbird - keep messages grouped by conversation

Control audio or video playback with your keyboard

Quick actions in the Firefox search bar

Firefox Translations

Font size and zoom - increase the size of web pages

Thunderbird add-ons - frequently asked questions

How to change the Thunderbird layout

Manage Firefox updates

Manage notifications in Firefox for Android

Manage marketing data settings in Firefox for Android

Import Bookmarks from an HTML file

Manage your extensions using the extensions button in the toolbar

An extension changed my New Tab page or home page

Compact mode workaround in Firefox

Get started with the Mozilla VPN extension

Change the fonts and colors websites use

Usernames and passwords are not saved

Use multiple profiles in Thunderbird

Manage file types and download actions in Firefox

Use Firefox in another language

Tips for assessing the safety of an extension

The difference between IMAP and POP3

Manage optional permissions for Firefox extensions

Import settings and data into Thunderbird for Android

Extension data collection

Add or remove a search engine in Firefox

Getting Started with the Thunderbird main window (Supernova and newer)

Add alt text to images in your PDFs using Firefox

Legacy browser support extension for Windows

About Picture-in-Picture in Firefox

Customize Date and Time formats in Thunderbird

Appearance Panel - Layout, Message List, Card View, Table View, Sorting and Threading settings

Configure push email for Thunderbird for Android

Recover lost or missing Bookmarks

Use Firefox in Full Screen mode

Use the Firefox Sidebar to access bookmarks, history, passwords and synced tabs

Multi-Hop - Encrypt your data twice for enhanced security while using Mozilla VPN

How do I restore my tabs from last time?

Switch from POP to IMAP account

Switch from Chrome to Firefox

How to disable the Enterprise Roots preference

Import login and password data from a file

Thunderbird and Exchange

Why does Mozilla disable some add-ons from running in Firefox?

IMAP Synchronization

Add-ons in Firefox for iOS

Profile Manager - Create and remove Thunderbird profiles

How to opt out of studies on Firefox for Android

Change website appearance settings in Firefox

Cannot remove an add-on (extension or theme)

Export bookmarks to Safari

Audio and video files in Firefox

How do I change to the desktop view in Firefox for Android?

Customize Firefox using Group Policy (Windows)

Set up Certificate Authorities (CAs) in Firefox

Setup your email account for using End-To-End Encryption

How do I change my DNS settings?

Choose your preferred PDF viewer in Firefox

Get started with Thunderbird

Import Bookmarks and other data from Microsoft Edge

Change the program used to open email links

What to do if you can't download or save files

Tab preferences and settings

How to disable or change the Thunderbird start page

Display the Thunderbird menus and toolbar

Customize Firefox Home on iOS

Set Firefox as the default browser for iOS

Protect your container tabs with Mozilla VPN

Importing Safari data into Firefox

Set Firefox for Android to open links in native apps

Getting started with Thunderbird for Android

How to search IMDB, Wikipedia and more from the address bar

Use bookmark folders to organize your bookmarks

Configuration Options for Accounts

Config Editor

How to reset the default user agent on Firefox

Uninstall Firefox for Android extensions

Installing an Add-on in Thunderbird

Autocomplete web addresses in the URL bar in Firefox Focus for iOS

Assign shortcuts to search engines

Manage extension shortcuts in Firefox

Drag and Drop errors with Firefox Launcher Process enabled and Windows UAC disabled - How to Fix

OpenPGP Recipient Alias Configuration

Domains to allow for Firefox

Firefox Suggest for Mobile

Thunderbird Mobile Telemetry

Gmail and Thunderbird for Android

Disable Mozilla VPN protection for a specific website

Block and unblock websites with parental controls on Firefox

Reset Firefox preferences to troubleshoot and fix problems

Firefox doesn't save web form entries

FAQ Changing IMAP to POP

How to Subscribe to News Feeds and Blogs

Access your add-ons with a Mozilla account

Customize Firefox using AutoConfig

Install themes to change the look of Thunderbird

Search suggestions in Firefox Focus for iOS

Collections in Firefox

Change your two-step authentication device for your Mozilla account

Firefox for Enterprise Kiosk mode

How to pin and unpin Firefox from the taskbar on Windows 10 and Windows 11

Manage Firefox with Microsoft Endpoint Manager (Intune)

Add a Firefox widget to your Home screen

View recently saved bookmarks from your homepage on Firefox for iOS

View bookmarks on your home screen

How file downloads are handled in Firefox

HTTPS-Only Mode in Firefox Focus for Android

My default search engine changed after updating Firefox

Change your wallpaper in Firefox for Android

Site Permission Add-ons

Unified Toolbar

How to delete an email mask

Global Privacy Control in Firefox for Android

A program on your computer interferes with the Mozilla VPN extension

Thunderbird for Desktop and Thundermail

Changes to toolbars and window sizes are not saved

Using Dark Theme in Firefox for Android

Make Thunderbird the Default Mail Client

Message List Columns

Thunderbird makes unrequested connections

Instant Messaging and Chat

How to Customize Toolbars

Maildir in Thunderbird

Customize the Firefox home screen

Scan QR codes in Firefox for Android

Voice input in Firefox for Android

Change the default language on Firefox for iOS

Advanced panel - System, network, updates, and other advanced settings in Thunderbird

Built-in themes in Firefox - alternative to complete themes

Turn search suggestions on or off on Firefox for iOS

Remove a search engine in Firefox Focus for Android

Add a search engine to Firefox Focus for Android

Autocomplete settings in the Firefox Focus address bar

Add search engines in Firefox Focus for iOS

Print simplified, clutter-free pages in Firefox

How to add the translate add-on to Firefox

How to replace Google Assistant with a Firefox search

Customize Firefox using policies.json

Access hidden tabs in Firefox

Firefox starts automatically when I restart Windows

Feed reader replacements for Firefox

Add trusted websites to your allow list in Firefox Focus

Choose display languages for multilingual web pages

Review installed extensions

Firefox Browser welcome pages - helping you get more from Firefox products and services

Turn on/off saved logins, login sync and login autofill in Firefox for Android

Grant camera access to Firefox for Android

Use Web Apps with Firefox for Android

End of support for Adobe Flash

Unable to uninstall add-ons (extensions or themes)

How to opt out of studies on Firefox for iOS

How to configure Close Tab warnings in Firefox

Choose your opening screen for Firefox for iOS

Change your wallpaper in Firefox for iOS

Recommended Firefox privacy and security settings for families

Automatically fill in your address on web forms in Firefox for Android

Upgrading from an older version of Thunderbird

Turn off ads on MDN Plus

How to automatically label your new email masks

What languages is Mozilla VPN available in?

Change your location for a specific website

Manage your Monitor notifications

Stop screen brightness from dimming in Thunderbird for Android

Thundermail and Thunderbird for Android

Getting Started with Thunderbird Pro

Harmful add-on protection

Restore the default Smart Bookmarks Folders

How to fix preferences that won't save

Change the default language of Firefox for Android

Share data with Mozilla to help improve Firefox

Closing multiple Tabs - option to disable warning

How to disable the built-in PDF viewer and use another viewer

How do I quit Firefox for Android?

Creating a Newsgroup Account

Names but no Email Addresses are Displayed

Configuration Options for Identity

Configuration Options for Tags

Configuration Options for Attachments

Certificates

Block a sender

How to Install and Use another Language in the Dictionary on Thunderbird

Installing Thunderbird on Ubuntu Linux

Add Search Engine to Open Search

How to Customize the New Mail Sound

Installing and Using another Language in the Dictionary

Get help with Firefox Developer Edition

Thunderbird and Logjam

Customize your New Tab page to hide or display content

Enable or disable search engines on Firefox for iOS

Manage saved passwords in Firefox for Android

Save passwords in Firefox for Android

Manage saved passwords in Firefox for iOS

Add Firefox to the Today view on your iOS device

Re-enable multi-process support disabled by Windows utilities

Set a homepage in Firefox for iOS

Change the default email program in Firefox for iOS

Set Firefox Focus as default browser on Android

New Tab settings in Firefox for iOS

File system paths on Linux are always treated as UTF-8

Security panel - Junk, scam, antivirus, and password settings in Thunderbird

Privacy panel - Remote content and cookie settings in Thunderbird

Facebook Container isn't working

How is Facebook Container different from Multi-account Containers?

Block cookies in Firefox Focus for Android

Change themes in Firefox for iOS

Firefox Focus main Menu

How to use collections on addons.mozilla.org

Debugging policy issues

Unable to install add-ons (extensions or themes) in Thunderbird

Manage policies on macOS desktops

Getting started with the Thunderbird main window

Disable high contrast mode in Firefox

Dedicated profiles per Firefox installation

Privacy settings in Firefox for Enterprise

Enforce policies on Firefox for Enterprise

See active policies on Firefox for Enterprise

Where can I find a list of policies for Firefox for Enterprise?

Managing policies on Linux desktops

Will policies I set work if users already installed Firefox?

Make Firefox for Enterprise the default browser

Dangerous directories

Playing videos in Firefox for Android

Customize Firefox on macOS using configuration profiles

Move the navigation bar to the top or bottom of the app in Firefox for Android

Using Dark Theme in Firefox for iOS

My privacy settings were changed from Custom to Standard

Tab context menu

Turn push notifications on or off in Firefox for iOS

Auto-close open tabs in Firefox for Android

Remove the Other Bookmarks folder from the Bookmarks Toolbar

Mozilla Voice Server Proxy Retiring

View and control data collected by Mozilla VPN

Text Encoding no longer available in the Firefox menu panel

Automatically fill in credit card information on Firefox for Android

Set Firefox as your default browser from the notification panel on Android

Exclude applications from Mozilla VPN protection

How to restore a browsing session from backup

Set Firefox Focus as the default browser for iOS

Change your theme in Firefox Focus for Android

Change your theme in Firefox Focus for iOS

Personalize Firefox with colorways

The language of the websites I visit changes when I turn Mozilla VPN on - What to do

Install the Firefox Relay extension on Firefox for desktop

View articles recommended by Pocket on your Firefox for iOS homepage

Add a search engine to Firefox klar for Android

Remove a search engine in Firefox Klar for Android

Autocomplete settings in the Firefox Klar address bar

How to move the address bar in Firefox for iOS

Receive only important emails sent through your masks with Firefox Relay Premium

Enable light or dark mode in MDN

Change site permissions in Firefox Focus for Android

Change site permissions in Firefox Klar for Android

Manage your Mozilla account newsletter and email preferences

How do I block phone calls or texts to my Relay Phone mask?

Mozilla VPN message center

How to disable the Firefox Relay autofill icon on online fields and websites

What should I do if I'm redirected to the Firefox Relay FAQ when clicking a link within an email?

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