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I have two installs of Thunderbird on Windows. On a calendar window, one of them has an upper toolbar with "Synchronize Event Task Edit Delete" options. See the attachment. On the other install, that upper toolbar is not present, and I do not know how to enable it.

Any advice is appreciated.

As originally asked at [Mozilla's Discourse instance](https://discourse.mozilla.org/t/how-to-allow-thunderbird-to-render-columns-outside-the-viewbox/135399?u=rokejulianlockhart):

> When unmaximised, it’s certainly capable of this: > > >  > > However, when maximised, it loses this ability: > > >  > > …but it doesn’t matter much anyway, because the subject column is so compressed and impossible to uncompress: > > > > > Consequently, how do I permit the columns to render outside the viewport, like I can in KDE’s Dolphin file manager (as an example): > > > 

Yesterday I had a problem controlling the Thunderbird layout. In a powerful demonstration of Murphy's Law, posting a detailed description here and waiting 24 hours seems to have made the problem go away.

I wish the same good fortune to anyone who reads this.

I am able to style tasks that are either completed/overdue/inprogress in userChrome.css . But so far I have not found a way to style canceled tasks.

Can someone help me ?

Hello, I would like to create shortcuts that I can type into the address bar and go to a specific website/url. In chrome I used a function that looked something like the image I uploaded. I don't know if Firefox has this function, I couldn't find it

Hi community!

For some reason, the short description of an email is now under the subject instead of besides it in the overview. This does something to my head that, atleast for me, makes it cluttery and hard to hover over who sent me email. I want a column with who sent me mail, then I want right of it a short description, the start of the mail, just like it always was. It takes vertical space so less email is visible and my head has to switch from "from" to "content" to "from" to "content" which is for some reason very tiring. It's one of the reasons I hate outlook... Please don't tell me Thunderbird changed into outlook -_-

How do I change this back to the way it was?

When the add-on "Copy Sent to Current" is running, the Composition Toolbar in the Compose Window is blank and therefore there is no "Send" button. What am I missing?

I've attached two screenshots - one with Copy Sent to Current disabled and the other with the add-on enabled.

When a generic Search is done or even if one has Search engines under Settings, Wikipedia comes upo but not Grokipedia which is very good and getting better and better.

This is for POP email. The displayed inbox size is incorrect. With my Inbox empty, "Show folder size" shows 10.6 G in left panel of display. This exceeds max folder size of 4G so something is not working correcty. In addition, MBOX Inbox in Thunderbird Profile also shows 10.6 G. This is important to me because this large file size is preventing me from loading Profile on to flashdrive for purpose of migrating to a new computer. Flash drives wil not accept it and give an error message. In addition, I don't want to start a new installation with bad data.

Hi. I did a clean install of Windows 11 yesterday. I reinstalled Firefox with the TreeStyletabs addon. I had saved the old sessionstore files so I thought it would be easy to get my tabs back.

Two things happens.

1) If I copy over a sessionstore.jsonlz4 to the profilefolder, it gets overwritten byt FireFox when I start the browser. 2) If I don't do that and instead click History and then Restore Previous Session Firefox will use the previousjsonlz4 and restore my tabs . But I have to do it everytime I start Firefox. It does 'remember' what I did.

How can I fix this?

Hello, How to hide particular email account in folder view if for all is set Local folders? I wold like to have Local folders view only instead of visible accounts. More over - I do not have Folder Panel Bar Best Zbigniew

Every few months, my message sorting will switch to threaded mode. It did it again within the last couple of days.

I thought maybe it reverts to defaults whenever an update comes through, but update history shows my last update was Sept. 12 (exactly a month ago), and I used T-Bird yesterday, and messages were not threaded then.

I'm thinking that if I change the defaults to "unthreaded", this would stop happening, but I'm curious if it's common for it to randomly switch to the default irrespective of updates.

Would the computer rebooting (whether manually or automatically for, say, Windows updates) cause it to revert to defaults - is that what's going on?

Attached is a picture of the relevant setting where you can see it is indeed set to move deleted emails to a specified folder. I am using Thunderbird 128.2.3esr 64bit on Fedora 40 and a gmail email address. I can also not find any other settings that may be affecting this.

After closing, tabs that were open aren't restored as they used to be.

I've read several replies to people asking how to get TB to restore the open tabs, and none of them seem to be solutions. I don't want to use tags, or anything other than for the behaviour that was there and that was useful, to be reinstated.

The only question is:

how to make TB restore open tabs after exiting the software?

Thanks in advance.

Can someone please tell me how to disable the new Sidebar? It is interrupting all of my workflow on the screen and it is frustrating with all of the choice and customization options in Firefox, that there would be no way to disable it.