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The Best Thunderbird Alternative for Windows in 2022

Posted by Christin on May 12, 2021

Thunderbird alternative for Windows

Marketing Manager

PR & Media Relations Supporting the team by communicating Mailbird and its great features to existing and potential users and media.

Published on May 12, 2021

Thunderbird — created by Mozilla, the organization behind Firefox — has been a popular free email client with a loyal following over the years, despite threats of halting updates and further development of the application. While Thunderbird email is a powerful cross-platform app with a robust library of add-on features that allow for full customization of your email experience, Mozilla no longer supports it, and that can be an issue for a lot of users.

So, that’s not the best news if you are accustomed to using Thunderbird.

While there are tons of Thunderbird email reviews, good and bad, this article will be useful for those looking for using Thunderbird alternative.

While some may enjoy the added functionalities, others may find this difficult and complicated to set up. Also, Thunderbird’s interface may not be as user-friendly as other email clients out there, including those that have just as many (if not more) advanced features.

For these reasons, you may be considering alternatives to Thunderbird. Whether you’re looking for an entirely new mail client or switching from Thunderbird, we’ve compiled a review of five Windows options below to evaluate in place of Thunderbird.

Since Thunderbird is a downloadable program for PCs and Apple OS, we won’t be including mobile apps in this review. Keep reading to find reviews of alternatives to Thunderbird and choose a replacement that works for you.

The 4 Best Alternatives to Thunderbird Mail

If you are looking for a Thunderbird alternative, here you will find a review of the following:

  • Mailbird — a powerful and feature-packed email client
  • eM Client — a simple design and user-friendly interface
  • Postbox — a beautifully designed interface
  • Webmail — any web-based email manager


Thunderbird alternative — Mailbird

Mailbird is one of the best alternatives to Thunderbird you can find. It is a

Having a clean interface in front of you coupled with an interaction that makes managing your online communication easier is a sweet deal.

Mailbird is super easy to use and promises you will be able to master it within five minutes. A great email experience is what you should strive for, and Mailbird gives you exactly that.

“I’ve purchased Mailbird for my old mother as well, as it’s easy to use. She’s not in anyway computer savvy, but last weekend I actually got an email from her – the first ever, imagine my (very pleasant) surprise! 🙂 For me Mailbird is a keeper – easy to use and most importantly easy to configure!! My 80 year old mom is a testament to that.” Lars – May 12.

We will be looking at the following areas to see if Mailbird is the best alternative to Thunderbird for you too:

  1. Layout and UI
  2. Most Popular Features
  3. Cost

1. Layout and User Experience

The biggest difference between Thunderbird and Mailbird is that the former is no longer updated. Also, it is known for its cluttered and bloated layout and UI, making it rather complicated for new and even existing users to handle the software.

Sure, if you use softwares on a daily basis you eventually learn how to get around it — in fact, that’s even the case with rocket science. But is that the best utilization of your time? Software, in this day and age, should be intuitive enough to not have a learning curve, so spending a few days unraveling the mystery of using a mail client seems like being pushed back to the early 2000s technologically.

Lack of simplicity, a clean UI, and an intuitive UX are the main reasons people start searching for a Thunderbird replacement. Email clients such as Mailbird feature an easy-to-use interface, enabling users to master it in less than five minutes (not days).

User Experience

User experience is the little details you don’t recognize consciously but that intuitively guide you to use the software.

The Mailbird email client has many such features. Let’s look at examples:

Example #1

Let’s say you’re a Dropbox user and you activated the Dropbox app from your Mailbird App Store. Apart from looking at your Dropbox app by clicking on the Dropbox icon in the bottom left, the only other place you’ll find it is when you’re composing a new email or replying to one. It shows up like this –

Upload files from Dropbox to Mailbird email

Dropbox integration inside Mailbird email client

And when clicked upon, it opens the Dropbox file explorer for you to select files to be attached.

Example #2

You might think an email client like Mailbird could not offer as many features and functionalities as Thunderbird. Otherwise, the inbox and menu would look the same, right? That is not quite correct.

Instead of filling the interface with lots of buttons and options, we hid them to show up on certain user actions. If you look at how emails are stacked in Mailbird, it looks just like any other email program, but when you hover over the profile picture of an email message, an action bar shows up on top, which makes it easier for you to deal with it.

You can even click on the profile picture of an email message, and it will show you all the emails you’ve exchanged with the person. Such features make you wonder, “Why use Thunderbird anymore?”

Mailbird is an awesome Thunderbird alternative

Looking for Thunderbird alternatives because of its cluttered design

Layout and UI

In Mailbird, you can customize the layout and color theme, personalizing your inbox.

Mailbird email application with awesome layout options

All the colours of the Mailbird email client UI

Different options for multiple pane view in Mailbird

2. Most Popular Features

As far as alternatives to Thunderbird go, people tend to look for  the ones that have the same features as Thunderbird, regardless of whether or not they will actually use those features,

Mailbird has integrated the standard features users know from Thunderbird, and the client also offers special Mailbird-only features that have not yet been implemented by any other email app. These features include a quick preview of attachments, a speed reader, LinkedIn lookup, snooze, and many others.

Integration with Third-Party Apps

An additional feature that differentiates Mailbird from other email clients is the integration of a variety of popular apps, turning Mailbird into a true all-in-one communication hub by combining email, messaging, task management, calendar contacts, and video meetings in the most effective way possible.

Mailbird’s all-star developer team continues to add and improve these features requested by you. Think Mailbird needs a certain feature to convince you to switch? We have a Mailbird Feature Request forum where you can submit your ideas.

Imagine working as a productivity machine through your email while also being able to jump on a call without having to switch to a web browser or other software. It’s not just convenient but also way more efficient. In Mailbird, as the best Thunderbird replacement, you have all your communication power tools in one place. You don’t have to open different web browsers to manage multiple tasks. In the Mailbird vs. Thunderbird battle, the former is the absolute winner, thanks to this feature.

Featured apps include:
  • Messaging apps, like Facebook, Twitter, and WhatsApp.

Use messaging apps in Mailbird

  •  Task management apps and tools, like Todoist,, Evernote, and Asana, can easily be activated in your Mailbird AppStore.

Mailbird’s Todoist integration sidebar view

  • Video meeting apps, such as Whereby and Veeting Rooms, allow you to easily jump on a call or virtual meeting, without having to leave your Inbox.

Team meeting from your Mailbird inbox

  • Calendar apps, like Google Calendar and Sunrise Calendar, give you a nice overview of your upcoming appointments and enable you to schedule appointments from your Mailbird.

Keep track of your schedule with Mailbird integrations

3. Cost

Mailbird has four different pricing options to choose from. Depending on the number of accounts and your actual email needs, Mailbird has the perfect plan for you, which may include:

  1. Mailbird Personal Yearly
  2. Mailbird Personal Pay Once
  3. Mailbird Business Yearly
  4. Mailbird Business Pay Once (on request only)

Mailbird gives you a free trial when you install it for the first time. This is a great chance to find out if Mailbird Business is the right choice for you.

Still have questions before downloading Mailbird? Our team is always there to help you out. Shoot us an email to or tweet us @getmailbird. We are ready to help you and to answer every single one of your questions. That’s a great value that comes with Mailbird — direct responses and feedback to help you through your email, communication, and communication management needs.

Ready to make the switch to the best alternative to Thunderbird? Simply start downloading Mailbird! You’ll just love it.

Mailbird vs Thunderbird. Give It a Free Try Now!

Try Mailbird for Free

eM Client

eM Client Thunderbird email alternative
Credit: eM Client

eMclient is one of the high rated alternatives to Thunderbird mail. Users praise its simple design and user-friendly interface that allows for customization of layout and theme. It offers the most features for free compared to other options; the only differences are that the Pro version lets you connect an unlimited number of accounts and includes tech support. The free version supports only two email accounts.

Migrating to eM Client is quick and easy, and it can transfer your messages and calendar contacts from a variety of other common email clients, including Gmail, Exchange, iCloud, and Microsoft Outlook or It also has a real-time chat function for instant messaging — you can even send attachments through it! Some other notable features include automatic translation of emails, a fast search function, and encryption options.


Thunderbird email alternative - Postbox
Credit: Postbox-Inc.

Postbox is one of the easiest to use alternatives to Thunderbird on this list. It works with any POP/IMAP account, including Gmail, Hotmail, Yahoo, and more. Once you’ve added your accounts, you can group them, in “personal” and “work” groups for example, to keep your email organized.

The application’s filtering and tagging features allow you to get even more organized — all on a beautifully designed interface. You even have emoji support, 25 email signature templates, and 70 professionally written email response templates at your disposal.

It’s important to note that the Postbox mail client also includes integrations with services like Evernote, Slack, Todoist, and more.


Even in a Mozilla Thunderbird review, webmail is always worth mentioning as an alternative. What do we mean by webmail? It’s a web-based mail client — Gmail, Yahoo, (not to be confused with the Microsoft Outlook application) are the most popular options.

Most email providers have some sort of web-based email offering that has a few advantages over an email application. Most importantly, you can access your inbox from any computer and on any browser. You don’t need to download an app to your computer.

On the other hand, you cannot access your email offline, and web-based email clients don’t typically have as many features as desktop apps. It will be important to weigh the benefits and drawbacks of webmail against your needs before deciding to go this route.


Have you found a Thunderbird alternative that suits your requirements for the perfect email client?

If you’re a light user, Postbox or webmail might be the best email application. For more advanced users, consider Mailbird or eM Client. If you need to manage multiple email accounts together with events, tasks, and other tools, Mailbird will help you turn your email app into a productivity workstation with many useful features and an intuitive interface.

At the very least, it can’t hurt to try a few options to see which one you like the best!

Declutter your email with the best alternative to Thunderbird

Try Mailbird for Free

Editor’s Note: This post was originally published in December 2015 and has been updated for accuracy and comprehensiveness.

Which email client is better than Thunderbird?

There are several alternatives to the Thunderbird email client, and one of the best is Mailbird. This email client is very powerful and packed with many features that ensure a quick, easy user experience. In addition, many third-party apps can be integrated with Mailbird. This means you don’t have to open different web browser tabs to manage your daily tasks and communication. 

Is Thunderbird discontinued?

Mozilla decided to hand off Thunderbird to the community back in 2014. Though the email windows client is still supported by Mozilla Foundation, it may be a good opportunity to move on to new email clients, such as Mailbird or another top alternative.

Is Thunderbird better than  Microsoft Outlook?

Since Thunderbird is open-source and no longer supported by Mozilla, Microsoft Outlook may be deemed a more secure option. However, both apps have a rather cluttered design and functionality.
If you’re looking for a simple yet powerful email client for Windows, try Mailbird.

Is Thunderbird mail safe to use?

Thunderbird mail is a moderately safe email client. However, keep in mind that Thunderbird is an open-source app and is no longer supported and upgraded by Mozilla.
If you’re looking for a secure and continuously improved email client, download Mailbird and take it for a trial run.

Marketing Manager

PR & Media Relations Supporting the team by communicating Mailbird and its great features to existing and potential users and media.

Published on May 12, 2021


51 thoughts on "The Best Thunderbird Alternative for Windows in 2022"

  • Howard Miller says:

    How difficult is it to transfer contact list information from Thunderbird to Mailbird. What are the costs associated with using Mailbird?

  • I just bought a new laptop and am deciding my email program after using Thunderbird. Mostly happy, but the spam does not train well.

    I’m considering mailbird, but do not yet see the advantages. I don’t mind paying a bit.

    I am curious as to whether my address list and stored emails can be transferred over easily. I sense some unhappiness with mailbird.

  • Harry Clarry says:

    MB Support,
    How does MB handle transfers of a contact list when installing it new on a Desktop computer? Can I Transfer the information from MS People, or does it require a CSV, or v Card file. I am now using G-mail on MS Windows 10 and MS Outlook after transferring from Thunderbird because of the recent termination of Mozilla. I was very happy with Thunderbird for years before they lost the Mozilla Support.which was very poorly done.

  • my e mail does not work in/out, please help

  • Vincent LaVallee says:

    I have been a very long time user of Thunderbird and it predecessor Netscape, where Mozilla provided the email portion of Netscape before the separated, and Netscape went the way of the Dodo bird! So, this goes back to the 80s.

    As far as others aving issues with TB, I can guess that they upgraded from version 60 to 68, which is another beast, and it did not even work with my POP3 email, so I stayed on version 60.9, which is probably the last version made by Mozilla. My versions works near perfectly, and it is far better in the user interface and ease of use than all other email programs, including Outlook (and I do not, which is not an email client, but is a web based email).

    I would also like to comment on some of the user comments in here, especially about the relatively poor support of Mailbird. As an example, a reply to Joseph was “We do not waterboard emails and we actually do not have a free version.” This is a horrible response, and clearly a support person venting his/her anger, and taking it out on the customer. A much better and more agreeable response would be something like “We do not do any waterboarding, so if you could, please send me a snap shot so we can see what you mean. And as for a ‘free’ version, we only offer a 30 Day free trial, but this is the full fledged product and we do not degrade it in any way.” And if there are really ads in Mailbird, or not, the response should have address that also. Letting technical people ‘talk to’ customers directly is often a no-no.

    Lastly, since Mozilla is no longer supporting TB, I was considering Mailbird as a replacement, but the negative comments in here and the clearly non-customer oriented support responses have, for now, steered me away. In addition, TB works great for me still, as long as I stay away from the ‘latest’ versions.

    • Hi Vincent,

      Thank you for sharing your thought and feedback. We will do our best to improve our support quality. Yes, some of our users not satisfied with the support they received, but we are doing our best to help our users to resolve any issue that they experience.

      I can assure you that any request and feedback, either it’s a good one or the bad one will be in our note and will be talked in regular meetings of the support team.

      As that being said, I hope someday you will change your mind and want to try and use Mailbird. Thank you for your interest in Mailbird. Have a nice day and stay safe. 🙂

  • Roy Mepham says:

    I signed up for Mailbird a couple of years ago but had to cancel because they had not included any sort of spam filtering. It turns out that they still haven’t so I shall not be considering this useless program. I know how to use server side functions but why should I have to?

    • Andrew @ Mailbird says:

      Hello Roy,
      Thank you for your comment, indeed we do not have a native spam filter implemented at the moment and no further ETA on this but we see increasing demand so we may consider implementing it in the future. Thanks!

  • The web forums are full of users having unstability problems with TB in 2019-2020 on certain ourgoing servers. That may be the reason why I and many others are looking for alternatives. I dont care who’s fault it is, other email clients do not have these problems.

    • Mick Strand says:

      Exactly. Instead of spending hours trying to solve the matters with Thunderbird (I did), I discovered after having read countless forums that users seldom posted any solutions. They all finally, like me, moved to another client. Problem solved.

  • I do not know whether it’s just me or if perhaps
    everybody else experiencing issues with your website. It appears as though some of the written text on your posts are running off the screen. Can spmebody else
    please comment and let me know if this is happening to them as
    well? This may be a issue with my internet browser because I’ve had this happen before.

  • On the strength of this article I had a look at mailbird as an alternative to Thunderbird. I wouldn’t have bothered if this article had mentioned that mailbird watermarks emails and has ads in the free version.

  • As an email program, Thunderbird has no equal. And it allows you to send HTML email with inline CSS without messing it up. I battle with computers all day, but Thunderbird has never let me down.

  • George Gasik says:

    Mailbird is crap. It’s not ready for public sale yet. You can’t even sort by columns. You can’t even HAVE columns. Do NOT throw your money away on this garbage.

    • Eldridge C Koppen says:

      I agree–I’d heard it was good, so paid for the subscription, and have nothing but trouble. They always blame something else, and don’t even seem to be able to answer the simplest questions without several back and forths. I’d tried e-mail client a bit, but so many people complained about it, I bailed. Oh, if only MS hadn’t shafted us and dumped WLM.

  • There seems to be no mention of security in any of these suggestions. When you are providing an email client the credentials for your email accounts it would be good to know the security policy.

    of course you could go to each client page and look it up but it just seems like something to consider when recommending something like a mail client.

  • Good summary of alternatives. Thank you. I checked this site because TB is behaving oddly. After update 2 days ago spellcheck now identifies a huge range of regularly used words as ‘mis-spelt’; words like actions, customers and so on. Most ‘errors’ are simply plurals, but not all. I have tried to log on to Support but get password error. Have requested reminder of password and entered my regular email address but although it says ‘reminder sent’, nothing arrives. All very frustrating. Apologies for this minor rant! TB had been great for many years and entirely trouble-free until now.

  • Thomas Tankengine says:

    Thunderbird is great. Maybe some of youse big-time “power-users” need something better but for your average Joe it works just fine. I been using it for years with NO problems at all. Lucky me, eh?

  • I loved Thunderbird until TB 60 came out. They’re making every theme worth using incompatible, especially the complete themes which make it so much easier to use. If they had to get rid of them, the least they could have done was provide more options than a solid white or solid black theme or the default which is white too. The screen is so darn boring now that I nod off when checking my emails. TB needs to allow complete themes or create some decent ones themselves or they’re going to lose a ton of users.

  • It’s pretty sad that they are using tactics like blocking passwords to try and get people to move on their own and then blame it on the servers. I am in search of a service like Thunderbird which is how I found this page.

  • Anyone but Obama says:

    Been trying to find out my passwords for Thundbird for months. Just can’t get to it. I follow instructions, but it’s nowhere to be found. I have to stop using TB because I can’t use it for my gmail account. Never had this problems many versions in the past. Nice job ‘improving’ with each version you effing morons.

    • I have been having problems with my passwords also. It’s not your server or you it’s Thunderbird they periodically cause the passwords to fail. They won’t recognize them as valid. Today I had all of my email passwords fail which is heartbreaking because my life is on there and it was so nice to go to one place to get all my emails.

  • George Hamilton says:

    I’m willing to bet some other organization will pick TB up and keep it going. Sadly, it might be someone might turn it into freemium or fully pay based software. I hope not that, but I do hope it gets picked up by some open development gurus, maybe some of the FireFox people who worked on it under them…I don’t know.

    • Christin Baumgarten says:

      Thanks for your feedback George:-) Question is if TB wants to be bought up I guess…Have a great weekend and thanks for sharing your thoughts:-)

      • George Hamilton says:

        Isn’t TB open source? And doesn’t that mean anyone is already free to pick it up and run with it, even if they have to give it a new name (Phoenix Rising?). Not sure how the intellectual property stuff works,

  • I want to download Thunderbird am disappointed to read this as seems a way better system. Will I be ok and updated downloading TB as I see most comments are year old.I have windows 10 ?

    • Christin Baumgarten says:

      Hey Keawi, this blog here from Mailbird about TB..In order to get the best and most accurate answer we would suggest you get in touch with TB. In the meantime, feel free to give us a try. We are constantly working on making Mailbird better and keep it updated all the time:-) Let me know if you have any questions:-)

  • I wish they merge Thunderbird in Firefox just like Opera.

  • what are these ‘resources’ all doing at Mozilla. Firefox is crap, TB is the only thing worth their time right now.

  • Daniel Winter says:

    The best email client for IMAP poweruses is TheBat. Insanely fast, too.

  • CoffeeExtremist says:

    I don’t understand why Mozilla doesn’t see the unique value of Thunderbird. I use 5 different browsers in Windows and Android, and for what I do, they are all pretty much interchangeable. If Firefox disappeared, I would miss it very little. But no other email client compares to Thunderbird in terms of versatility and extensibility. Why does Mozilla focus all it’s attention on a commodity product like its browser, while neglecting a truly unique and useful product like Thunderbird? If it’s money, I’ve said many times I would pay a montly subscription service fee for Thunderbird.

    • Im total agree with you, they should work in improving the thunderbird, and charge, but please deliver a piece of software can truly compete in this technology world. i also have to lose those chi-chi extension to integrate services and im finish to move back to another software

  • David VANTYGHEM says:

    Thunderbird development is still alive and the number of users is still growing. Thunderbird is the most secure and best messaging software, no raison to switch to another. Outlook ??? It’s a joke !

  • JustaNickname says:

    I am with eMClient. Does the job really well.

    • I moved to Thunderbird because eMClient was just getting too flaky with keeping the inbox refreshed and other glitches. Thunderbird has seemed much more reliable although it seems to be getting a little slow getting messages out at the moment. But still working well. I donate a little to it, seems like a good solid program.

  • realraven2000 says:

    There is no need switching to Postbox – the code base of Thunderbird is still up to date (based on Gecko 38) and not 27 versions behind (AFAIK Postbox is based on Gecko 9.0). And development of Thunderbird is ongoing, and will be for the next couple of years, so I really don’t see why you would be looking for alternatives right now?

    • Ashley Glover says:

      For me it is the way it looks and feels.
      It want it to look modern and less cluttered.
      Tabs for each email account would be amazing.

    • Thunderbird 68.9.0 cannot make up its’ mind as to what font size to use in messages.

    • andrew dumas says:

      because it will no longer work. And despite all the help I got from volunteer support nothing fixed it. It now wont function at all and noone is sure why. So hows that for a reason to switch mail?

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