Mozilla Connect

Currently, Firefox supports opening a video in Picture-in-Picture mode with the shortcut Ctrl + Shift + ]. However, this only works for one video at a time — the currently focused one. For heavy users of YouTube, Twitch, and other video platforms, it would be extremely useful to have a shortcut that opens all currently playing videos into PiP windows at once. For example, a suggested shortcut could be: Ctrl + Shift + Alt + ] This would make Firefox much more powerful for multitasking, especially when watching multiple livestreams or monitoring several videos simultaneously. ... View more

When I have vertical tabs turned on, I can drag the tab bar to change the width, and I can make it bigger so it shows the text of the tabs, or I can make it so it only shows the icons (which I prefer). But I can also drag it to have a width of zero, which I don't think is a bad thing. I think Firefox developers should keep the option to be able to completely remove the tab bar from view and only use the "list all tabs" button in the top left, or just know your tabs by memory, as I believe this is a really cool feature.  The only problem is, when I do drag it to be closed all the way, I can't drag it back. I can put my mouse over to the right side of the screen, and it will turn from a very fine white line to a very fine blue line, but if I drag it, it won't bring back the tab bar. I have to, for example, press Ctrl + H to open History and then press the X in the corner to get the tab bar back to the icons-only setup.  The tab bar should be able to be dragged to have a width of zero (which is possible), but should also be able to be dragged back (which is not possible).  ... View more

This feature has been asked to be added since almost 20 years ago,  here:  https://bugzilla.mozilla.org/show_bug.cgi?id=444284 Currently, Firefox Sync does transfer essential data (bookmarks, history, passwords, add-ons), but it does not include search engine shortcuts or custom-added engines or even deleted search engines (google,etc).... This missing functionality creates significant friction, requiring repetitive and time-consuming manual setup, which diminishes the utility of the Sync feature. (Especially if you have search engines added with custom preferences or very specific search engines added through mycroft for example..)  ... View more

Title. The articles on new tab are painfully american. I keep getting articles about the basketball league, american politics and local issues I cannot relate to because of the culture gap. What if there was a way to toggle customization of the articles shown by area (e.g. european sites) or language?  ... View more

Hello, I have been a long-time fan of Thunderbird on PC, and I’m very grateful for the release of the mobile version — I had been waiting for it eagerly. I also try to support the project with one-time donations whenever possible. I have one request for the mobile client: could you please display attachments right after the email subject, instead of at the very end of the entire thread? In long conversations it takes a lot of scrolling to reach them. I would greatly appreciate this improvement. Thank you very much for your work and for developing this amazing project! Best regards, Aleks ... View more

Please add an easy single button way to disable the JavaScript Just-In-Time Compilation (JIT) like in Chrome or Edge. I like to have this disabled for security reasons to reduce the amount of possible exploits because this is one of the most common ways to exploit your browser. In Chrome or Edge is it relatively easy to do this, however in Firefox, you must change a bunch of stuff in the config menu. Which may put off some users in disabling this commonly exploited feature. ... View more

Web addresses in Contacts need to be prefixed with "https://" before the web address is displayed as an active link.  This is archaic and should not require the aforementioned prefix to be displayed as a active link.  ... View more

Favicons allow transparent pixels, which means they interact directly with the color of a tab (as the theme in use would dictate). The browsing experience could be improved if Firefox detected low contrast combinations--for example, a site favicon that is a black or dark logo with a transparent background, designed with the expectation of a light tab behind it. (https://seatylock.com/ is a current example when using a dark theme). If Firefox could detect that a favicons pixels are on average below a certain threshold, it could then apply a light background to boost the icon's contrast, or alternatively invert the design. Some websites (example https://www.nytimes.com/) in fact detect dark theme preference and then adapt the favicon dynamically. This feature would enhance visibility and accessiblity for sites that don't offer that. ... View more

Instead of shoving so called AI tools in Firefox, I would love a feature that can detect AI content, whether in text or in media (audio, image, video). Right click a text selection, an image or a video and select "Is it AI?". A popup appears and gives an answer. You could also add this feature to Thunderbird. ... View more

*My 'Firefox for android' app's "User Data" has increasingly become 374MB only because it loses track of "Incognito sessions" each time when this app is abruptly closed by the Android System (due to low RAM / or for battery saving). This app is currently not smart enough to auto clear the junk data of private browsing sessions' abrupt closure. An update must be brought as soon as possible for this issue. So that our history & data retains, but only junk/old private sessions' data are cleared from storage. * While editing Text in this browser the auto "Magnifier" setting toggle to turn it off should be provided in settings. ... View more

The Archive Email Locally action that copies an email to a local folder and deletes it from the server (freeing up storage space on the server).  Free email server storage is often limited (typically 5–15 GB), while many users have over 1 TB of available space on their computers.  This action differs from standard Archive feature, which archives an email on the server. Archive Locally should perform delete operation on the server, after copying email to a local archive folder. Some email providers, such as Gmail, have non-standard IMAP implementations where deleting an email from the Inbox folder does not actually remove it from the server. For these providers, Archive Locally should perform all necessary steps to ensure the email is fully removed from the server. In the case of Gmail, Thunderbird would need to delete the email first from the Inbox folder, then from the All Mail folder and finally from the Trash folder. In my experience, Thunderbird users often want to free up server storage by deleting or archiving emails in Thunderbird and are surprised, when they don't gain any additional free storage on the server. The Archive Locally action would provide Thunderbird with an unique value proposition, compared to web-based email clients: the ability to free up server storage while preserving messages in a local archive folder. ... View more

As per the Github Issue: https://github.com/thunderbird/thunderbird-android/issues/906 display as plain text only force html into plain text ... View more

Since this feature hit my browser after an update a while ago, I'm constantly annoyed by it. I've been dragging tabs all the way to the left to rearrange them practically forever, and now suddenly doing this is pinning tabs that I don't want to pin - I'm just trying to rearrange my tabs. Perhaps I'm in the minority here, and that's fine - this feature can be enabled by default; however, an option to disable it altogether (via settings or even an about:config option) would go a long way. This feature greatly disrupts my workflows and has proven to slow me down when I'm in my flow state while developing websites. I need this feature to be toggle-able to continue using Firefox as my daily driver browser. Update 2025-09-29: This feature can now be (mostly) disabled via an about:config option (as of v143.0.3). Setting "browser.tabs.dragDrop.pinInteractionCue.delayMS" to any relatively high value should effectively disable the option. The value is the number of milliseconds before the pin tab option triggers. I set mine to 2000, requiring a full 2s before the feature triggers, which has generally solved the issue for me. I encourage you to adjust this config option to your liking once your browser is updated to at least 143.0.3 ... View more

I am using MacOS (work laptop) and GNOME (personal laptop) and both environment use a top menu.  For this reason I find it hard to use the tabs at the top and recently discovered the vertical tabs option which is awesome.  The only issue is that it takes more space so I set it to the narrowest possible.  This is great except that, since the tabs are now very small, I find it very easy to accidentally click on the close ("X") or the mute button.  I do not need these buttons at all as I just use the (ctrl/cmd)+w or mouse middle click.  I already closed some tabs like that by accident.  Sometime these could be easily re-opened but sometimes can loose the data that was already filled up and need to start over.  Please please please, provide an option to not have floating/hidden buttons on the tabs so I will not have to reload accidentally closed websites and a redo my work again. Thank you for the great for Firefox, Thunderbird and Rust! Regards, Mozilla fanboy 🙂 ... View more

How it would work: A user installs the "Thunderbird AI Suite" add-on from the official repository. The add-on adds new buttons to the composition toolbar: "AI Assist," "Translate," "Improve Tone," etc. It also adds options to the right-click context menu in the email list and reading pane. When you click a function, the add-on sends the selected text (or the entire draft) to an AI API (like OpenAI's GPT, Google's Gemini, or Anthropic's Claude). The processed result is then returned and inserted into the email. Subscription Model: The add-on would be free to install but require users to log in with an account for the AI service. Users would purchase credits or a monthly subscription directly from the add-on's website. Their account key would be entered in the add-on's settings. This is exactly how many AI-powered browser extensions work today. 2. Native Integration by Thunderbird Itself (The "Gold Standard") This would involve the Mozilla team building these features directly into the core Thunderbird code. This would provide a smoother, more secure, and deeply integrated experience. How it would work: AI features would appear as native menu items and buttons, not added by a third-party. In Account Settings, there would be a new "AI Features" tab where you could manage your subscription and set preferences (e.g., default translation language, preferred writing style). Subscription Model: This could be a premium tier for Thunderbird, similar to what Mozilla has done with its VPN and Relay services. A user's Mozilla account would grant access. Alternatively, it could be a built-in marketplace where users can subscribe to different AI providers (e.g., "Subscribe to OpenAI," "Subscribe to Mistral AI"). Proposed Feature Set for "Thunderbird AI" Here’s what the subscribed accounts could get access to: A. Composition & Writing (The "AI Compose" Button) Draft from Scratch: "Write a professional email declining a meeting invitation." Rephrase & Improve: "Make this email more formal/concise/friendly." Expand: "Turn these bullet points into a full paragraph." Summarize Long Drafts: "Shorten this email by 50%." B. Translation Inline Translation: Seamlessly translate an email you are writing into another language before sending. Read Translated Emails: Instantly translate a received email into your native language with a single click. C. Inbox Management & Triage Smart Summarize: Get a one-paragraph summary of long email threads. Tone Detection: Get a warning: "This incoming email appears to be highly aggressive or urgent." Smart Categorization: Go beyond basic filters; AI could categorize emails based on intent (e.g., "Invoice," "Customer Support," "Networking"). D. Smart Replies Generate quick, context-aware responses like "Yes, that works for me," "Thanks, I'll look into this," or more complex replies based on the email you received. Technical and Business Considerations Privacy & Security (CRITICAL): This is the biggest hurdle. Users must trust that their email data is handled securely. The ideal model would be: Clear Data Policy: Explicitly stating that emails are sent to the API for processing but are not stored or used for training. On-Device Processing (Future): As open-source models (like Llama) become more powerful, some features could run locally on the user's device, eliminating data privacy concerns entirely. This is the holy grail. API Costs: The subscription fee would need to cover the cost of using the AI APIs. A "freemium" model with a limited number of free queries per month could attract users. User Interface (UI): The UI must be intuitive and non-intrusive. Buttons and options should be available but not clutter the clean Thunderbird interface. Short-term Reality: A third-party Add-on is the most probable and quickest way to see this happen. Long-term Vision: Native integration by the Thunderbird team, offered as a subscription service through a Mozilla Account, would provide the best user experience and build a sustainable revenue stream to support Thunderbird's continued development. A key future of productivity software: the seamless integration of generative AI into our daily tools. ... View more

Hi Thunderbird team, I'd like to propose what might seem obvious in hindsight: replacing Thunderbird's proprietary mail storage with Dovecot's battle-tested storage libraries. THE PROBLEM: - Thunderbird's storage regularly corrupts and requires rebuilding - No portability between Thunderbird installations - Incompatible with other mail clients - Constant reinvention of solved problems (deduplication, indexing, etc.) THE SOLUTION: Dovecot has been the gold standard for mail storage for 20+ years. It's MIT-licensed (free to embed), and solves every storage problem Thunderbird faces: - Self-healing indexes that never corrupt - Professional-grade deduplication - Standard Maildir format readable by any client - Production-tested with billions of emails THE IMPLEMENTATION: - Embed only Dovecot's storage libraries (not the IMAP server) - Keep Thunderbird's UI/features, replace only the storage layer - Could start as opt-in for testing THE RESULT: Thunderbird becomes the most reliable mail client overnight. While Outlook corrupts PST files and Apple Mail rebuilds its cache, Thunderbird users would have bulletproof storage that survives anything and remains portable forever. This isn't adding complexity - it's replacing buggy code with proven code that's been refined for decades. Many users already run Dovecot locally just to give Thunderbird reliable storage. Why not eliminate the middleman? ... View more

"Create Filters From Messages" can be somewhat time consuming, but is very important to some of us. I suggest in order to cut down on this time consumption that we make it easier to create the new folders that the create filters process often requires.  I can think of two ways: - have a new option of "Create Filters From Messages Including Automated New Target Folder Creation" or (more time consuming, but still somewhat of an improvement): - allow for creating new target folders from within the existing Create Filters From Messages screen.  Both of these would help the user having to go through the process of creating new folders in advance of creating new filters. ... View more

Currently, no IEA email addresses (such as äöü@test.local) can be set up in Thunderbird, whether on a desktop or mobile device. Entering punycode is not a solution either, because IEA (SMTPUTF8) means native UTF-8, and there are no intermediate encodings such as punycode for IDN. (The email addresses in the images do not exist, but that doesn't matter because you can't even get to the settings where ports/mail servers etc. are entered). ... View more

On the website page, sometimes hyperlinks that are clicked with the left mouse button will automatically open in a new tab in the browser, which we all know. However, if this hyperlink fails to load in the new tab, the address bar of the new tab will be blank and will not display the URL, and the 'Refresh' button will be unavailable while the 'Go to' button will also not be visible. This is clearly a bug that has existed for a long time. However, if you previously click on that hyperlink with the right mouse button and select 'Open in new tab,' even if it fails to load, the URL will still be displayed in the address bar of the new tab, allowing for easy further action. I hope this issue can be fixed. ... View more