Independent Thunderbird extensions · Free to use

Useful tools
for a better
Thunderbird workflow.

Reliable extensions for Mozilla Thunderbird — free, maintained, and supported by donations. Built to make everyday email faster, cleaner, and easier.

No adsNo trackingFree to useIndependently maintained

Extensions

Small, focused add-ons designed to solve real Thunderbird workflow problems.

FolderTabs icon
Productivityv1.0

FolderTabs

Pin folder tabs to a persistent toolbar so your most important folders are always one click away.

FolderTabs screenshot
Well testedLast updated: Apr 2026Tested with Thunderbird 150.0Downloads: 0
Persistent folder toolbarUnread countsCustom colorsRename tabsKeyboard shortcuts
Fast Writer icon
Writingv1.0

Fast Writer

Insert reusable text templates in compose windows with toolbar buttons and keyboard shortcuts.

Fast Writer screenshot
StableLast updated: Apr 2026Tested with Thunderbird 150.0Downloads: 0
Reusable text templatesCompose-window toolbarKeyboard shortcutsFast repliesLess repetitive typing
Quick Move icon
Navigationv1.0

Quick Move

Keyboard-first quick folder switch, move, and copy for users who manage email fast.

Quick Move screenshot
Fast workflowLast updated: Apr 2026Tested with Thunderbird 150.0Downloads: 0
Folder autocompleteKeyboard-first operationMove messagesCopy messagesQuick folder switching
Auto Switch Dictionary icon
Composev1.0

Auto Switch Dictionary

Automatically switch compose spellcheck dictionaries using fast Markov-style language detection.

Auto Switch Dictionary screenshot
Smart detectionLast updated: Apr 2026Tested with Thunderbird 150.0Downloads: 0
Automatic language detectionSpellcheck dictionary switchingFast Markov-style detectionMultilingual compose support

Built for practical email work.

Focused extensions with clear purpose, clean behavior, and no unnecessary distractions.

🚫

No ads

The extensions are designed to help your workflow, not interrupt it.

🔒

No tracking

No analytics scripts or hidden tracking inside the extensions.

🛠️

Maintained

Updates and fixes are planned as Thunderbird evolves.

💛

Donation-supported

Use them for free. Support development only if they help you.

Support the project

These extensions are free to use and will remain so. If they save you time or improve your workflow, consider supporting the project. Your donation helps keep everything updated and improving.

Donate

FAQ

Clear answers before you install.

Are the extensions free?

Yes. The extensions are free to use. Donations are optional and help support development.

Are they official Thunderbird extensions?

No. These are independent extensions made for Mozilla Thunderbird.

Do they include ads or tracking?

No. The goal is useful functionality without ads, tracking, or unnecessary distractions.

Is the source code public?

No. The extensions are free to use, but the source code is not publicly distributed.