Make sure to visit our YouTube channel with tips and tricks such has how to get started with Addons.

A list of common questions & answers and also some tweaks that can be done to better suit QuickFolders to your mail client. These apply to all supported Mozilla based mail clients such as Thunderbird, SeaMonkey, Postbox.

Important News Flash!

The new QuickFolders version for Thunderbird78 is currently in prerelease, you can download the current beta from here:

If you have interest or comments in the conversion project please visit the QuickFolders github:

issue 8 - make QuickFolders compatible with Thunderbird 78 - for God's sake!

Please do not manually upgrade to Thunderbird78 until the issue is resolved. Better yet, wait for the automatic update pushed by Mozilla.

Frequently Asked Questions

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An important Feature is missing! Where can I request this?
Go to the QuickFolders github issue tracker, and then raise a new issue.
Something is not working, I think there is a bug, what do I do?
Report the bug or contact me directly. Get as much information as possible, there is a section about creating a bug log here.
The best way log errors is to use the built in error console (under Tools « Developer Tools « Error Console).
Then you can just highlight a range of messages and copy it to the clipboard.
Can QuickFolders open a new mail tab for me?
From version 1.8.8, you can hold down [Ctrl] while clicking a QuickFolder tab, this will open the folder in a new tab.
Is there a debug mode?
There are numerous debug options that cause more information message in the javascript error console. Error console can be shown using the shortcut Ctrl+Shift+J or via the Thunderbird tools menu under Developer Tools « Error Console.
The additional debug options for QuickFolders can be set in about:config - or by right clicking the "Debug" checkbox on the QuickFolders Options Advanced tab:

The Debug checkbox must be activated for any of the other debug options to be effective.

This will minimize the amount of reading / copying / pasting of error messages. Do not activate all of them because you will be flooded with messages, if in doubt you can contact me for suggestions for relevant ones for a specific problem.
Does QuickFolders work with the current beta of Thunderbird?
After version 72, Thunderbird is making some fundamental changes that require classic add-ons to be adapted in order to prepare for a rewrite as web extension. Since many APIs are missing / incomplete to achieve what classic Add-ons are currently allowed to do using XUL and XPCOM, the interim step will be to create a "web-experiment" versions of the Add-ons. These versions will not be compatible with the current (or previous) versions of Thunderbird (68 and below).
For the moment I recommend staying with Thunderbird 68.* until I announce the new version via ATN / automatic update / on my web pages. If you have a Pro license, I will notify you as soon as a version for Thunderbird 78 becomes available.
Can I contact you directly?
Yes, any feedback regarding QuickFolders is strongly encouraged - the easiest way is from the options / support dialog:

Contact Me
I can see no colors on my Folder Tabs. Why is this?
In Options, on the "Bling my Tabs!" page, activate the "Flat Style" theme and make sure not to select "Native Tabs". Without this the QuickFolders are just displayed as ordinary toolbar buttons, which takes away a lot of their style-ability.
QuickFolders is great but... it looks ugly. How can I change that?
Scroll down to the Layout Tweaks section for some handy CSS and more UI teaking.
Can I reorder the Tabs?
Just drag the Tabs on top of each other - do not try to drag a tab into the gap between two tabs, it will only be put to the far right then.This is what it should look like:
Dragging Tabs
Some of my Folders disappear at the bottom of the screen!
That's a bug specific to Thunderbird 3.0.1, you can fix it, by upgrading to the latest version of Thundebird, 3.0.3.
in Linux I cannot see menu icons!
If in Ubuntu, try changing the following setting: gconf-editor /desktop/gnome/interface/menus_have_icons
What is UserChrome???
The UserChrome file is your personal "makeup kit" for changing all visual aspects of Thunderbird - for how to use it, skip down to the Tweaks Section "How to Edit userChrome.css"
You're brilliant. Can I reward you?
First of all, pass on the good news about QuickFolders to all other Thunderbird/SeaMonkey/Postbox users you know. You're always welcome to send me (Axel) emails directly from the Options / Support tab, but I am also very grateful to donations: Just click here for detail.

Layout Tweaks

In order to style QuickFolders to your needs, above and beyond the options available on the "Pimp my Tabs" page, you can edit the userChrome file and add some style rules. If you know about CSS then you might find the following diagram helpful:
Toolbar Legend
These can be used in userChrome.css which you can edit using tools like "Edit Config Files..."

Some Examples For Re-Styling QuickFolders

Add any of the following CSS rules to your userChrome.css file. For the geeks, there is a more detailed article about customizing Mozilla here.

If there are any special ones I haven't mentioned, please send me an email - see link at the bottom of the page. I will publish the best ones here.