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I normally can see emails sent out from my account, when I am replying to an email that is in my Inbox. I have just recently installed Thunderbird for Android, and when I view emails in my inbox, I still cannot see emails in the thread, even though I just replied to one of the emails in my inbox. Now Thunderbird does realize that I have sent an email--I can view my email in the Sent folder. But I cannot see that email in the email thread in my inbox.

This is strange; with other email clients I can see emails that I reply to (meaning, I get an email from someone, see that email in my Inbox, and then reply to that email). I can see those emails that I sent out, in my Inbox in other clients, but not with Thunderbird for Android.

Apart from that, I really do like the Android client. Is there any option I need to configure to allow me to view my own emails sent out, in my inbox? I checked the Settings but didn't see anything to switch on/off.

Firefox cannot open any links within apps on Android. Whenever a link is tapped within a native Android app, nothing happens. When links are tapped within Firefox itself, they open immediately.

For example, Google headlines do not open when tapped directly in the app. View in Google App is disabled. No link appears in Firefox.

Other social apps have similar issues where tapping a link inside a reply shows no response.

When I chose a color for a phrase in my email, I accidentally added a color I don't want to the list of custom colors. It was a shade off. How can I delete this so that I won't use it again?

Does Thunderbird support custom avatars or display avatars? If not, will it be supported in the future? I added my QQ mailbox but the avatar cannot be displayed. This is not good. The default digital avatar is not good looking.

In Windows 11 settings > personalization > composition, is a way to change sounds like: error sound, connect device etc.. Before Firefox I used chrome and I set a sound for minimizing/maximizing and it worked. Whenever I minimized the browser it would play a custom sound. Since I started using Firefox the sounds don't seem to work anymore. Now I know the sound still works because when I minimize/maximize the file explorer it plays the custom sound. Is it not supposed to work or is it a bug? How can I make it play the custom sound? Thanks in advance :) (In Windows 10 it didn't work aswell)

I'm using version 140.0.1esr on macOS Sequoia 15.3.2. The problem is very simple. When I compose an email, hitting return puts me at the center of the next blank line. If I type, the text is all centered from this point on. Thunderbird didn't do this in the past, so I either inadvertently changed a setting, or the behavior of Thunderbird has recently changed.

I really have no desire to spend time getting to know Thunderbird better. Like most people, I want to compose completely unstructured text-based email. (If I ever wished to add structures, which I doubt I ever will, I'd prefer markdown to HTML, like everyone else in the known universe ...)

Ideally: there is an easy fix by changing a setting. Second best: There is an alternative email program to Thunderbird, perhaps text based, that can read Thunderbird mail archives. Third option: There is an early version of Thunderbird that still runs on current versions of Mac, before Thunderbird began including text formatting in email composition (along with all of the other distractions that have be degrading the quality of Thunderbird for a very, very long time).

Sometimes I’m in Firefox and then have to switch to another app for a reference. When I come back to Firefox it opens in a new homepage instead of where I was I was before switching. Is there any way to prevent a new page from popping up when I switch back to Firefox? I see nothing in settings that might relate to the issue.

An extremely irritating bug in Thunderbird. Don't even remember how long it has been doing this; when I am typing a message, if I so much as switch away from the Thunderbird window (to look something up for example), when I come back to the window it will switch the font size to 1-2 points smaller than what it had been doing before. I have not selected any formatting settings, and had been typing in it's default type size. Merely switching out of the window should not perform a type size change.

I have ever had to just highlight the entire message (if TB has completely fubarred the font), delete it from TB, paste it into a plain-text editor to remove all formatting, and then paste it back in.

As Outlook online and the mobile app are using a different archive folder than Thunderbird (128.12 on Win 10), I set TB to use the same folder as Outlook (similar problem to here: https://support.mozilla.org/en-US/questions/1168534). But TB is ignoring it and even after unsubsubscribing and deleting the TB archive folder in Outlook, TB is recreating it after archiving the next e-mail. It also ignores the option to put all the mails in one folder and instead creates a one for each year. What can I do?

firefox need to detect and know how much monitors and screens like 1,2,3,4 to know to open new window always in monitor 1, screen 1. in now is open always is where is placed first open firefox program window. that is happened when i start firefox in screen 1 and move it to second monitor screen 2 all others start opened program windows open in screen 2 monitor 2. this is not good. if i will come time to hav 4 monitors and 4 screens what we do ?!?!? chasing where is open firefox program in all monitors.

second. all firefox opened program windows and loaded links in them need to remember where is closed to remember where is need to open in next time like monitor number and screen number. also what is size of program window is in moment of closing of program window.

talk about it and see what you will do about this futures in new updates.

Сделала новую подпись при помощи html кода и прикрепила туда картинку с ссылкой, еще другие ссылки , при отправке сообщения внизу экрана пишется данное сообщение " Thunderbird заблокировал загрузку в это сообщение файла. Разблокирование файла включит его в отправленное вами сообщение" При этом пропадает картинка и виден только контур где она раньше была.

Можно конечно разблокировать сразу сообщение и картинка привяжется, но писем много и каждое разблокировать будет  неудобно и муторно. Можно ли как-то в настройках это убрать?

On the most recent update (7/14/2025), my basic Firefox settings were apparently wiped without any notice. To be clear, other things like my bookmarks were not lost, and my extensions were still installed at least. I previously had Firefox setup to not show me any content when I start it, just a blank page. I also had history saving disabled by default (ie privacy mode). After the update, you started showing me a page that wasn't blank and instead had suggestions on it. Also, the history was being saved from that point on. If I wasn't somewhat tech savvy, I might not have noticed the second change, as there was no warning from Firefox that my settings would be reverted with the update. I eventually figured out how to restore the behavior I had previously with this new version, but it took quite a bit more fiddling than previously to get history saving to be disabled by default when starting Firefox. I do appreciate the addition of fingerprint auth to switch to the app now as an option, but over all this seems like a predatory thing to do to users. I was asked to post here by a developer response to my review on Google Play in which I reported these issues (though much more briefly due to the character limit). I do understand that major updates/changes can require resetting configuration. However, those kinds of updates should display a warning/notice of such a change. I did look for such a notice on the "What's new" content for the update, which isn't something most people would likely even look at, but even there I did not see any indication that past settings would be lost/wiped.

Hello, I'm trying to deploy a dynamic HTML signature on Thunderbird 140 ESR using policies.json. The goal is to pull user data (full name, job title, phone number) from our Active Directory.

The PostMessage policy for setting the signature is completely ignored. However, other policies like DisableAppUpdate work perfectly, so I know policies.json is being read correctly.

Troubleshooting has confirmed this is not a path or permission issue, as the signature also fails when using a local file (file:///C:/...) and even when the signature is set as direct text inside the policy itself.

Is this a known bug or issue in v140 ESR? Is there a reliable method to deploy a dynamic signature from AD via policy?

Thank you.

Recently, Thunderbird is saving my sent messages to "Sent Messages" which is a folder that exists on my remote server. Up until this time, they were going to a folder called "Sent" which is where I want the messages to go.

I navigated to Account Settings and clicked on Copies & Folders and found the option for placing a copy in the "Sent" folder on my server. So, I chose that option, but messages are still being saved to "Sent Messages."

I have the latest version of Thunderbird that I am using on a Windows 11 laptop. I'm not sure what else I can tell you that will help.

Set to default system, colours in Thunderbird are based on black, while other apps can set up colours like in Android 13 - material or sth. Not sure the name. I just mean system colours are picked up from wallpaper and I have already my own set of colours that apply to most apps but not Thunderbird. My question is: when TB will support this? Should I post this as feature request? I've posted once, about full threading, but not many replies there

Hello, i am not sure if this is the right place for my Question:

I love to use Thunderbird but in some moments the handling is quite confusing oder buggy. I don't know if i may do think wrong.

I do get Mails from other people with other styling Formats (e.g. Calibri Font from Outlook) and i always use arial. If i copy a text from an mail with other format, put it in my mail with the command "Paste Text without format" it does not always work. E.g. is the visual in my Editor often in Arial but when i send the mail, then i see in my sended mails that the font switched back to calibri. I thought the "Paste Text without format" option will delet the format of the inserted Text and using the default mail format which i defined in my settings?

Its annoing cause i always produce Mails with different styles in it. I am using the latest ESR Version.

I prefer to use Firefox with WordPress when coding. I use an important plugin that gives me SCSS fubctionality that used to work without issue in Firefox until recently. The problem is conflicting keyboard shortcuts, namely tab selection "command + option + up arrow", and "command + option + down arrow" (on a Mac). I would like to reassign them, or better yet, set them to "false" as i never use the feature. I have tried many suggestions online, and none are working. Any help solving this would be much appreciated. Thank you.

Greetings!

So every time Firefox has an update for my tablet (Samsung Galaxy Tab A8, 64GB SM-X200, Android 14, One UI 6.1) the settings always, ALWAYS reset. I have to go back in and change everything back to my preferences. I've cleared cache, restarted who knows how many times and it still happens.

I have Firefox on other devices, both Samsung and otherwise, and it doesn't happen anywhere but my tablet.

Ideas? Suggestions?