Thunderbird is a full desktop email client handling unlimited accounts across IMAP, POP and Exchange-compatible services, with an integrated calendar, address book and strong message search. The standard free Outlook alternative.
Why choose Mozilla Thunderbird?
Thunderbird is a full desktop email client handling unlimited accounts across IMAP, POP and Exchange-compatible services, with an integrated calendar, address book and strong message search. The standard free Outlook alternative.
Mozilla Thunderbird is open source, so the source code is public, the licence cannot be withdrawn, and no company can move it behind a paywall later. It runs on Windows, macOS, Linux, and it comes from MZLA Technologies rather than from a repackager — this page sends you to www.thunderbird.net, the publisher's own site, so what you install is the authentic signed build.
Worth comparing before you commit: Mozilla Thunderbird vs Discord, Mozilla Thunderbird vs Telegram Desktop, Mozilla Thunderbird vs Signal.
Mozilla Thunderbird features
- Unlimited email accounts
- Integrated calendar and contacts
- Powerful search and message filters
- OpenPGP end-to-end encryption built in
How to download and install Mozilla Thunderbird on Windows
- Use the official source. The download button on this page opens www.thunderbird.net, the publisher's own site — that is the safe route. If you would rather we double-check the current link first, ask and we email it. Either way, never take a mozilla thunderbird download from a mirror or a "download manager" portal, which is where bundled adware comes from.
- Pick the build for your system. Mozilla Thunderbird runs on Windows, macOS, Linux. On Windows take the 64-bit package unless you are on an old 32-bit installation.
- Run the installer and accept the defaults. MZLA Technologies ships no bundled extra software with it, so there is nothing to untick.
- Open it once before you need it. Confirming it launches and sees your files or hardware takes a minute now and saves a problem later.
- Keep it updated. Update from inside the program or from www.thunderbird.net — update prompts arriving by email or pop-up are not from the publisher.
Downloading Mozilla Thunderbird in India
Mozilla Thunderbird is the same software worldwide — there is no separate India build, no regional licence and nothing extra to pay. A mozilla thunderbird download in India gets the identical package everyone else receives, straight from www.thunderbird.net.
We link only to that official source, so a mozilla thunderbird setup download India from this page cannot arrive wrapped in a third-party installer. That matters more than download speed: the adware people blame on "free software" almost always comes from a mirror site, never from the publisher.
Is Mozilla Thunderbird really free?
Open Source. Source code is public; free to use, study and modify. You can download and use it without paying, and without creating an account with us.
How to download Mozilla Thunderbird safely
Use the request button on this page and we will email you the current link for www.thunderbird.net — the publisher's own website — so you receive the authentic, digitally signed build. We do not host, mirror, patch or repackage this software in any way.
Avoid third-party "download manager" sites offering Mozilla Thunderbird. They commonly wrap the genuine installer in their own bundler, which is how adware and browser hijackers get onto a machine that the user believed was clean.
Alternatives to Mozilla Thunderbird
Other free communication software worth comparing before you decide:
Discord
Voice, video and text chat built around communities.
View details
Telegram Desktop
Fast cloud-synced messaging with very large file transfers.
View details
Signal
The privacy benchmark for encrypted messaging.
View details
Zoom Workplace
Ubiquitous video meetings with a usable free tier.
View detailsSee all Mozilla Thunderbird alternatives compared →
Compare Mozilla Thunderbird head-to-head
- Mozilla Thunderbird vs Discord
- Mozilla Thunderbird vs Telegram Desktop
- Mozilla Thunderbird vs Signal
- Mozilla Thunderbird vs Zoom Workplace
Frequently asked questions
Is the Mozilla Thunderbird download free?
Yes. Mozilla Thunderbird is open-source software — free to download, use and keep, with no paid edition, no trial period and no feature held behind a key.
Is Mozilla Thunderbird safe to download?
It is, provided it comes from www.thunderbird.net — MZLA Technologies's own site, which is where the link we send you points. We host no installer of our own and never repackage software. Nearly every "free software gave me a virus" story traces back to a third-party download portal rather than the publisher.
Which platforms does Mozilla Thunderbird run on?
Mozilla Thunderbird runs on Windows, macOS, Linux. Take the build that matches your operating system; on Windows that means the 64-bit package unless you are running an old 32-bit installation.
Do I need an account to download Mozilla Thunderbird?
Not with us — FreeSoftwareX has no accounts, no paywall and no download gate. Ask for the link and we email it to you. MZLA Technologies may ask you to register on their own site, which is their choice rather than ours.
What are the best free alternatives to Mozilla Thunderbird?
The closest free communication options are Discord, Telegram Desktop, Signal. Each is listed here with its own licence, platforms and features so you can compare them properly rather than guessing.
Tell us what went wrong — a person reads every message and replies. Corrections to this page are treated as priority fixes.
People also search for
The terms visitors use to find this page. Each one lands here because it describes the same program.
Searches from India
Mozilla Thunderbird is identical worldwide — these are search phrasings, not different downloads. Every one of them gets the same official build from www.thunderbird.net.