# Thunderbird

**URL:** https://discourse.mozilla.org/c/thunderbird/254.md

[Latest](https://discourse.mozilla.org/latest.md) · [Categories](https://discourse.mozilla.org/categories.md) · [Tags](https://discourse.mozilla.org/tags.md)

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## [\*\* READ THIS NOW - before posting. How to get help](https://discourse.mozilla.org/t/read-this-now-before-posting-how-to-get-help/129120)

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**Author:** [@wsmwk](https://discourse.mozilla.org/u/wsmwk)\
**Replies:** 0\
**Last updated:** [March 31, 2024, 11:57am UTC](https://discourse.mozilla.org/t/read-this-now-before-posting-how-to-get-help/129120 "2024-03-31T11:57:02Z")

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Do not post Thunderbird items here - discourse is NOT monitored, so you are unlikely to get a response here. Please use: https://support.mozilla.org/en-US/products/thunderbird for help, support and to ask questions …

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## [\*\* READ THIS NOW - before you post here - READ ME NOW and about Thunderbird \*\*](https://discourse.mozilla.org/t/read-this-now-before-you-post-here-read-me-now-and-about-thunderbird/113074)

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**Author:** [@wsmwk](https://discourse.mozilla.org/u/wsmwk)\
**Replies:** 3\
**Last updated:** [October 14, 2023, 11:43am UTC](https://discourse.mozilla.org/t/read-this-now-before-you-post-here-read-me-now-and-about-thunderbird/113074 "2023-10-14T11:43:14Z")

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Do not post Thunderbird items here - discourse is NOT monitored, so you are unlikely to get a response here. Use these active and official locations to get help and information about Email, desktop and Android (K-9) com…

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## [Useful Thunderbird Links](https://discourse.mozilla.org/t/useful-thunderbird-links/26733)

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**Author:** [@ryanleesipes](https://discourse.mozilla.org/u/ryanleesipes)\
**Replies:** 8\
**Last updated:** [April 27, 2020, 8:31am UTC](https://discourse.mozilla.org/t/useful-thunderbird-links/26733 "2020-04-27T08:31:19Z")

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Putting this here for folks just getting started with Thunderbird. Here are my most useful Thunderbird links that help me contribute every day. Useful Thunderbird Links: Thunderbird Build and Code Documentation - Tutori…

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## [Ability to compress images within an email you receieved](https://discourse.mozilla.org/t/ability-to-compress-images-within-an-email-you-receieved/75526)

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**Author:** [@jh20001](https://discourse.mozilla.org/u/jh20001)\
**Replies:** 4\
**Last updated:** [October 9, 2026, 2:26pm UTC](https://discourse.mozilla.org/t/ability-to-compress-images-within-an-email-you-receieved/75526 "2026-10-09T14:26:45Z")

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This is one extension solution I have never seen, therefore it might not be possible to do. But it would be nice to be able to right-click on a message that came in and choose to “compress images”. I wouldn’t want it to …

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## [How Can I Block Annoying Ads in Thunderbird (2026)?](https://discourse.mozilla.org/t/how-can-i-block-annoying-ads-in-thunderbird-2026/149383)

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**Author:** [@Lynnette](https://discourse.mozilla.org/u/Lynnette)\
**Replies:** 4\
**Last updated:** [September 14, 2026, 5:24am UTC](https://discourse.mozilla.org/t/how-can-i-block-annoying-ads-in-thunderbird-2026/149383 "2026-09-14T05:24:51Z")

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Hi uBlock Origin gone for Thunderbird. How Can I Block Annoying Ads in Newsletters? https://services.addons.thunderbird.net/En-uS/thunderbird/addon/ublock-origin/ ==\> I get the eror “Forbidden” in Safari and Mullvad…

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## ['Open message in conversation' gives me the wrong conversation](https://discourse.mozilla.org/t/open-message-in-conversation-gives-me-the-wrong-conversation/149177)

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**Author:** [@John\_Emmas](https://discourse.mozilla.org/u/John_Emmas)\
**Replies:** 5\
**Last updated:** [August 28, 2026, 5:27pm UTC](https://discourse.mozilla.org/t/open-message-in-conversation-gives-me-the-wrong-conversation/149177 "2026-08-28T17:27:04Z")

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I’m running Thunderbird version 153.0.3 on Windows 10. If I choose an email in my inbox and I then select ‘Open message in conversation’ it does show me a conversation but it’s not relevant to the email I chose. Is this …

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## [Thunderbird constantly minimizing on MacOS Sequioa](https://discourse.mozilla.org/t/thunderbird-constantly-minimizing-on-macos-sequioa/148986)

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**Author:** [@ytyjt67567dfdfgbbcc](https://discourse.mozilla.org/u/ytyjt67567dfdfgbbcc)\
**Replies:** 0\
**Last updated:** [July 18, 2026, 5:58pm UTC](https://discourse.mozilla.org/t/thunderbird-constantly-minimizing-on-macos-sequioa/148986 "2026-07-18T17:58:56Z")

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For some reason, anytime I open thunderbird, open an email, or click New Message in Thunderbird, all Thinderbird windows minimize. It has been pretty consistant since I installed Thunderbird. Has anyone seen this before…

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## [Thunderbird search results](https://discourse.mozilla.org/t/thunderbird-search-results/81212)

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**Author:** [@kostenzer](https://discourse.mozilla.org/u/kostenzer)\
**Replies:** 3\
**Last updated:** [July 16, 2026, 11:06pm UTC](https://discourse.mozilla.org/t/thunderbird-search-results/81212 "2026-07-16T23:06:00Z")

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Hi, First I want to say, it was very difficult to find the thunderbird forum and asking a question. It took a time to find this place. The question. If searching in Thunderbird in the sceen with results, in the right…

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## [\[Ext\] MoreLayouts](https://discourse.mozilla.org/t/ext-morelayouts/69950)

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**Author:** [@alta88](https://discourse.mozilla.org/u/alta88)\
**Replies:** 11\
**Last updated:** [June 21, 2026, 8:14pm UTC](https://discourse.mozilla.org/t/ext-morelayouts/69950 "2026-06-21T20:14:53Z")

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The MoreLayouts extension adds additional layout options to Thunderbird. Features include: Wide Thread View and Stacked View Reversible views Configurable Fullscreen F11 and Message Pane F8 toggles Message pane header …

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## [How to stop nag for "alternate text" when resizing inline images](https://discourse.mozilla.org/t/how-to-stop-nag-for-alternate-text-when-resizing-inline-images/111152)

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**Author:** [@fredwehr](https://discourse.mozilla.org/u/fredwehr)\
**Replies:** 2\
**Last updated:** [June 17, 2026, 11:07am UTC](https://discourse.mozilla.org/t/how-to-stop-nag-for-alternate-text-when-resizing-inline-images/111152 "2026-06-17T11:07:38Z")

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Running 102.7.2 (32-bit), up-to-date. Sometime recently, Tbird has gotten in the way of resizing, forcing users to choose “no text.” See screenshot. Yes there seems to be an addon " No Alt Text" but this all seems un…

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## [How to create a theme that can alter most of the colours in thunderbird](https://discourse.mozilla.org/t/how-to-create-a-theme-that-can-alter-most-of-the-colours-in-thunderbird/138007)

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**Author:** [@Dove](https://discourse.mozilla.org/u/Dove)\
**Replies:** 1\
**Last updated:** [June 17, 2026, 9:16am UTC](https://discourse.mozilla.org/t/how-to-create-a-theme-that-can-alter-most-of-the-colours-in-thunderbird/138007 "2026-06-17T09:16:07Z")

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Hi, I would like to create a theme for thunderbird that can change more than just the tab and frame colour, ideally I would like to be able to change the background, sidebar and text colour aswell. I have managed to ge…

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## [New RemindIt Addon version available soon](https://discourse.mozilla.org/t/new-remindit-addon-version-available-soon/148459)

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**Author:** [@omarce](https://discourse.mozilla.org/u/omarce)\
**Replies:** 0\
**Last updated:** [May 25, 2026, 10:29am UTC](https://discourse.mozilla.org/t/new-remindit-addon-version-available-soon/148459 "2026-05-25T10:29:05Z")

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Hello, a new fresh version of RemindIt addon is waiting for validation. Meantime if some of you wants to betatest, let me know. RemindIt v4.1.0 — Release Notes What is RemindIt? RemindIt is a Thunderbird extension tha…

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## [Thunderbird Login Outlook.com Mailbox Port Clash Bug](https://discourse.mozilla.org/t/thunderbird-login-outlook-com-mailbox-port-clash-bug/148405)

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**Author:** [@AkarinLiu](https://discourse.mozilla.org/u/AkarinLiu)\
**Replies:** 1\
**Last updated:** [May 23, 2026, 3:20am UTC](https://discourse.mozilla.org/t/thunderbird-login-outlook-com-mailbox-port-clash-bug/148405 "2026-05-23T03:20:54Z")

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我最近遇到了无法发送邮件的问题，我尝试删除账户重新登录，但是遇到了一个问题：获取登录信息默认使用本地电脑的 443 端口，但是与 Steamcommunity 302 和 Laravel Herd 等涉及使用 https 端口的软件冲突，希望能够改为随机端口以解决该问题。 I recently ran into an issue where I tried to delete my account and re-login, but…

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## [What happened to reddit/r/Thunderbird/ community?](https://discourse.mozilla.org/t/what-happened-to-reddit-r-thunderbird-community/69037)

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**Author:** [@juraj.masiar](https://discourse.mozilla.org/u/juraj.masiar)\
**Replies:** 3\
**Last updated:** [May 18, 2026, 9:19am UTC](https://discourse.mozilla.org/t/what-happened-to-reddit-r-thunderbird-community/69037 "2026-05-18T09:19:51Z")

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I’ve noticed there was no activity on reddit for 5 months: https://www.reddit.com/r/Thunderbird/ What happened?

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## [Contributing to Thunderbird holiday calendars?](https://discourse.mozilla.org/t/contributing-to-thunderbird-holiday-calendars/147959)

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**Author:** [@km55](https://discourse.mozilla.org/u/km55)\
**Replies:** 1\
**Last updated:** [April 20, 2026, 4:47pm UTC](https://discourse.mozilla.org/t/contributing-to-thunderbird-holiday-calendars/147959 "2026-04-20T16:47:04Z")

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Hello everyone, Hopefully I’m asking this in the correct place. I imported the Thunderbird holiday calendar (https://www.thunderbird.net/en-US/calendar/holidays/) for Finland and noticed the frankly horrible localizati…

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## [Languages list incorrect](https://discourse.mozilla.org/t/languages-list-incorrect/147612)

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**Author:** [@theking2](https://discourse.mozilla.org/u/theking2)\
**Replies:** 0\
**Last updated:** [March 12, 2026, 1:05pm UTC](https://discourse.mozilla.org/t/languages-list-incorrect/147612 "2026-03-12T13:05:55Z")

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Who curates the spelling language list? There is an incorrect dictionary for German (Swiss)

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## [Accessing MAPI-maintained folders in Thunderbird](https://discourse.mozilla.org/t/accessing-mapi-maintained-folders-in-thunderbird/147492)

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**Author:** [@torben](https://discourse.mozilla.org/u/torben)\
**Replies:** 2\
**Last updated:** [February 21, 2026, 6:52pm UTC](https://discourse.mozilla.org/t/accessing-mapi-maintained-folders-in-thunderbird/147492 "2026-02-21T18:52:41Z")

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Hi - I am trying to develop an add-on for Thunderbird, that handles the mails in the folder structure under the mail account - those that are maintained when Thunderbird is synced with the mail account. I want to find d…

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## [Thunderbird add-on API for the calendar?](https://discourse.mozilla.org/t/thunderbird-add-on-api-for-the-calendar/75337)

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**Author:** [@bjoern.s](https://discourse.mozilla.org/u/bjoern.s)\
**Replies:** 4\
**Last updated:** [February 17, 2026, 6:58am UTC](https://discourse.mozilla.org/t/thunderbird-add-on-api-for-the-calendar/75337 "2026-02-17T06:58:34Z")

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Hi all, I wonder whether the Add-On API from Thunderbird also allows to write add-ons for the calendar? I couldn’t find here anything regarding the calendar. My concrete idea: I would like to try to develop a add-on fo…

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## [Security question](https://discourse.mozilla.org/t/security-question/147319)

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**Author:** [@stevec5375](https://discourse.mozilla.org/u/stevec5375)\
**Replies:** 1\
**Last updated:** [January 30, 2026, 2:20pm UTC](https://discourse.mozilla.org/t/security-question/147319 "2026-01-30T14:20:20Z")

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As I was attempting to install the “Send Later” add-on, a dialog popped up asking for permissions to access THE ENTIRE COMPUTER. Why? I think that seems like overkill. Why does an add-on that only deals with sending m…

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## [Textmarker addon](https://discourse.mozilla.org/t/textmarker-addon/147264)

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**Author:** [@ajfrenzel](https://discourse.mozilla.org/u/ajfrenzel)\
**Replies:** 1\
**Last updated:** [January 26, 2026, 9:22am UTC](https://discourse.mozilla.org/t/textmarker-addon/147264 "2026-01-26T09:22:37Z")

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Take a look to EditEmailSubject MX: it enables the user to edit the mail subject. Optionally the addon copies the original mail to a special folder. But anyway, email has very little evidence, since it is very easy to t…

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## [Ridiculously small default thunderbird font](https://discourse.mozilla.org/t/ridiculously-small-default-thunderbird-font/147170)

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**Author:** [@Bruce\_Thompson](https://discourse.mozilla.org/u/Bruce_Thompson)\
**Replies:** 0\
**Last updated:** [January 14, 2026, 5:06pm UTC](https://discourse.mozilla.org/t/ridiculously-small-default-thunderbird-font/147170 "2026-01-14T17:06:12Z")

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And I had to waste time to find that the fix was to change the layout.css.devPixelsPerPx config setting. Can we get an option on the settings panel to change this?? It is 2026…

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## [Thunderbird Deleting User Created Tags](https://discourse.mozilla.org/t/thunderbird-deleting-user-created-tags/147133)

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**Author:** [@ESSPEE73](https://discourse.mozilla.org/u/ESSPEE73)\
**Replies:** 0\
**Last updated:** [January 11, 2026, 9:21pm UTC](https://discourse.mozilla.org/t/thunderbird-deleting-user-created-tags/147133 "2026-01-11T21:21:07Z")

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I am using Thunderbird with Apple Mail and Proton Mail. Tags I have created and used are deleted from Apple Mail messages only. Steps to reproduce: Apply tag. As soon as I move to another message the applied tag clears. …

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## [Syncing PAB with Google Contacts](https://discourse.mozilla.org/t/syncing-pab-with-google-contacts/146863)

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**Author:** [@dalewebb1](https://discourse.mozilla.org/u/dalewebb1)\
**Replies:** 0\
**Last updated:** [December 28, 2025, 8:29pm UTC](https://discourse.mozilla.org/t/syncing-pab-with-google-contacts/146863 "2025-12-28T20:29:13Z")

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Right now, for me, the greatest drawback of using Thunderbird is its inability to natively sync/use Google Contacts. I have tried export \> import methods, but they seem “lossy" and I seem to lose data. I tried CardBook…

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## [How to create a unified starred folder?](https://discourse.mozilla.org/t/how-to-create-a-unified-starred-folder/135400)

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**Author:** [@rokejulianlockhart](https://discourse.mozilla.org/u/rokejulianlockhart)\
**Replies:** 3\
**Last updated:** [December 11, 2025, 11:33am UTC](https://discourse.mozilla.org/t/how-to-create-a-unified-starred-folder/135400 "2025-12-11T11:33:43Z")

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I’d like a unified folder for my starred messages. There isn’t an automatically generated folder or tag. Ideally, there should be, but I’d like to ascertain whether a workaround exists (before I file a ticket at Bugzilla…

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## [AddOn Request/Suggestion](https://discourse.mozilla.org/t/addon-request-suggestion/146610)

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**Author:** [@gmoneychaz](https://discourse.mozilla.org/u/gmoneychaz)\
**Replies:** 2\
**Last updated:** [December 4, 2025, 2:10pm UTC](https://discourse.mozilla.org/t/addon-request-suggestion/146610 "2025-12-04T14:10:42Z")

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I use TB with multiple e-mail accounts. It would be great if there were a way, either natively or with an AddOn, to be able to change the order in which those accounts are displayed without having to Export all the e-ma…

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## [BuxarTranslate - Translator for Thunderbird](https://discourse.mozilla.org/t/buxartranslate-translator-for-thunderbird/146597)

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**Author:** [@BuxarNET](https://discourse.mozilla.org/u/BuxarNET)\
**Replies:** 0\
**Last updated:** [November 27, 2025, 4:37pm UTC](https://discourse.mozilla.org/t/buxartranslate-translator-for-thunderbird/146597 "2025-11-27T16:37:48Z")

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BuxarTranslate - Translator for Thunderbird Core Functionality BuxarTranslate is an extension for the Thunderbird email client that allows you to translate text directly within the program’s interface without using thi…

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## [Google calendar sync is not working](https://discourse.mozilla.org/t/google-calendar-sync-is-not-working/146392)

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**Author:** [@rossi](https://discourse.mozilla.org/u/rossi)\
**Replies:** 1\
**Last updated:** [October 29, 2025, 3:16pm UTC](https://discourse.mozilla.org/t/google-calendar-sync-is-not-working/146392 "2025-10-29T15:16:04Z")

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That’s not a new bug for me, I’ve been dealing with this one for a few years new, across multiple PCs and Thunderbird installations: some of my appointments disappear from Thunderbird calendar. Forcing a synchronization …

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## [Request for a new action in message filters, concerning attachments](https://discourse.mozilla.org/t/request-for-a-new-action-in-message-filters-concerning-attachments/146303)

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**Author:** [@Chibi\_Beru](https://discourse.mozilla.org/u/Chibi_Beru)\
**Replies:** 1\
**Last updated:** [October 20, 2025, 1:40am UTC](https://discourse.mozilla.org/t/request-for-a-new-action-in-message-filters-concerning-attachments/146303 "2025-10-20T01:40:11Z")

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Hello, I have a request for an upcoming release of Thunderbird: Would it be possible to add an action to the message filters that saves all attachments from a message to a specific folder on the PC? I haven’t found an…

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## [Autheticatiemethode](https://discourse.mozilla.org/t/autheticatiemethode/139210)

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**Author:** [@Frans1942](https://discourse.mozilla.org/u/Frans1942)\
**Replies:** 1\
**Last updated:** [September 23, 2025, 11:59am UTC](https://discourse.mozilla.org/t/autheticatiemethode/139210 "2025-09-23T11:59:28Z")

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Goede middag, ik kreeg het volgende bericht: De IMAP-server imap.telenet.be ondersteund de geselecteerde authenticatiemethode niet. Wijzig de Autheticatiemethode in de account. (Ik kan geen e-mail meer verzenden). Wat te…

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## [Problem with the “Show in topic tree” function after update](https://discourse.mozilla.org/t/problem-with-the-show-in-topic-tree-function-after-update/139056)

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**Author:** [@Alex\_1975](https://discourse.mozilla.org/u/Alex_1975)\
**Replies:** 1\
**Last updated:** [September 23, 2025, 2:17am UTC](https://discourse.mozilla.org/t/problem-with-the-show-in-topic-tree-function-after-update/139056 "2025-09-23T02:17:31Z")

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Dear Support Team, After the last update, I noticed that the function “Show in topic tree/Im Themenbaum anzeigen" no longer appears in Thunderbird. This feature was essential for me as it allowed me to organize my emai…

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