Thunderbird 2026: Benefits, Features & Pricing

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Overview
Pricing and Plans
Features
User Reviews

Overview

Thunderbird

4.4

(156)

Pricing

Pricing available upon request

About Thunderbird

Thunderbird is an open-source email management platform, which enables businesses to organize, filter, set up, search and archive email conversations and accounts. The on-premise solution automatically blocks image attachments within email messages to protect users' privacy.

Using Thunderbird, managers can access conversations across multiple tabs, receive reminders about message attachments and set up user accounts with information including name, email address, and password. Organizations can schedule events on a calendar, create to-do lists and maintain an address book with details such as images, birthdays and more. Additionally, the platform supports multiple languages and offers built-in message encryption capabilities to secure conversations.

Thunderbird allows businesses to create email signatures and mailing lists. The product is available for free and support is extended via documentation and forums.

Thunderbird Screenshots

Thunderbird Pricing and Plans

Starting price: Connect with an advisor for pricing

Free Trial

Free Version

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Thunderbird Features

Popular features found in Email Management
Alerts/Notifications
Archiving & Retention
Autoresponders
Canned Responses
Contact Management
Data Recovery
Email Marketing
Email Monitoring
Search/Filter
Shared Inboxes
Signature Management
Spam Blocker
More features of Thunderbird
Activity Dashboard
Inbox Management
Mobile App
Multiple User Accounts
Response Management
Tagging

Thunderbird User Reviews

Overall Rating

4.4

Ratings Breakdown

56%

30%

11%

Secondary Ratings

Ease of Use

4.3

Value for money

4.7

Customer support

3.7

Functionality

4.3

Stanley M.

Verified reviewer

Information Technology and Services

11-50 employees

Used daily for more than 2 years

Review source

Reviewed November 2022

The Best Opensource Mail Client.

I love the new modern look that ships with Thunderbird and the support for dark theme.

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

Am an opensource lover and the fact that thunderbird has been my mail client for years.

Cons:

The email configuration can be made simple that what is being currently offered for custom domains.

Reasons for choosing Thunderbird

Open License and free to install and use meaning if you try it and it doesn't work for you you can always opt to change without any incurred cost.

Reasons for switching to Thunderbird

Cost of License.

Jose Miguel V.

Verified reviewer

Education Management

1001-5000 employees

Used daily for less than 2 years

Review source

Reviewed June 2023

A proof that free can be good

Since I have been using Thunderbird, I never regret my switch from Outlook. Over the years, although the development has not been fast, it has been fast enough for the product to adapt, at least in functionality, to what every mail client must deliver to its user.If you are looking for a robust free email client, Thunderbird is the best option.

Ratings Breakdown

Ease of use

Value for money

Functionality

Pros:

I am sure that many people like me came to this product because it is the Mozilla Foundation behind it. We all know how they think about their product, making privacy their flagship. In the case of Thunderbird, you can find a robust email client with functionalities at the level of many other paid clients. If I need to list Thunderbird's advantages, I will start by talking about its extensibility, making it one of the first email clients you can improve and customize with free third-party add-ons. Another great addition of the last years was the "Smart folders," making your multiple account inbox easier to visit and search.Right now I am using Thunderbird for all my personal emails, and the client has all you need to manage successfully all your personal data flow.Thunderbird is free, and for sure is the best option for email clients at this tier.

Cons:

I will list the things I think can be improved in Thunderbird, but I repeat, we are in front of a robust FREE client, so please consider this when you read about the following points.Complexity: While Thunderbird's extensibility is a strength, it can also be a weakness. The sheer number of options and settings can be overwhelming for less tech-savvy users, and it may take some time to configure it to your liking. This one was my first problem after I switch from Microsoft Outlook.Aesthetics and UI: For me, this is a big problem. While this is subjective, and the interface can be customized, when you open Thunderbird you are looking at a user interface that has not been modernized according to the times.No Native Mobile Application: On June 22, Thunderbird announce the partnership with K-9 email to make real the Android native mobile application, until now, this not happens. Almost all people manage their emails on the go from their smartphones, so again, this is a must for a modern email client.

Reasons for switching to Thunderbird

I tried their email solution because I love what Mozilla Foundation makes with Firefox.

Sara A.

Verified reviewer

Information Technology and Services

2-10 employees

Used daily for less than 2 years

Review source

Reviewed June 2024

The free email client

I use Thunderbird on PCs that have not Office installed and I need an email client instead of the web one. I don't like very much the menu, especially the settings section. The interface looks a bit older, compared to other email clients. Anyway Thunderbird is a good program, but if you use a 365 email account I recommend Outlook instead.

Ratings Breakdown

Ease of use

Value for money

Functionality

Pros:

Thunderbird is free and allows to manage multiple accounts email, so if you want to save money and use a regularly updated program without problems about licenses/demo/trial etc., you are doing the right choice. There is a lot of documentation on internet, so in case of troubles (or simply if you need to do further settings) you will easily find your answer. After you have configured at least one email account, you will see your email folders on the left and all your emails on the right. Creating and organizing your emails and folders is easy and intuitive.

Cons:

The settings interface is a bit confusing; in the future 365 email accounts may have issues to works as Thunderbird does not belong to Microsoft.

Wiktor P.

Verified reviewer

Education Management

2-10 employees

Used daily for less than 2 years

Review source

Reviewed June 2023

Thunderbird needs more integration with other software

It is good inbox managment software for the smaller companies or solo enterprenuers, but when you need to optimize some processess in your organization, it may lack integration abilities.

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

It is fast, easy to use and the search function is excellent. You can easily find conversation without knowing its exact topic, content or receiver, thunderbird can find it even wtih some general keywords.

Cons:

Lack of integration with another softwares that controls workflow. It is just separate software without connection to other processess in my organization. I would like to see it integrated with some note taking apps, communictaion softwares like Slack, Calendars, projects managment software etc.

Reasons for choosing Thunderbird

faster, better design, better search option and inbox managment, better price (free)

Reasons for switching to Thunderbird

faster, better design, better search option and inbox managment.

Adam R.

Verified reviewer

Entertainment

11-50 employees

Used daily for more than 2 years

Review source

Reviewed October 2022

Thunderbird is the ONLY email software you need.

Thunderbird handles multiple email accounts. There is even a chat feature. It sorts my email. It removes the Spam and Junk correctly. It archives and stores my past emails and keeps them where they can be searched and accessed at any time. A life saver finding old emails once again!

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

Thunderbird is so easy to setup. Also if there is an option you want included such as a calendar or todo list or whatever, it integrates easily with add-ons and tools. There is nothing missing when it comes to this power tool!

Cons:

The software has never let me down. There is nothing to say about "like least". It works. It is easy to learn. And use it every day. And have for YEARS.

Reasons for switching to Thunderbird

The programs I was using before, would not load on some days. They didn't have all the features that I could setup and wanted. Thunderbird has it all. Loved it from the first day I set it up.

Kasi H.

Verified reviewer

Hospitality

201-500 employees

Used daily for less than 6 months

Review source

Reviewed August 2024

Not worth the time

It was pretty much a complete disappointment. With the calendar and the mail and then it using 50% CPU.

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

We didn't not like it. We started looking for alternatives within a few weeks

Cons:

It kept deleting our calendar. And since we are a hotel our calendar is very important. It also just stopped fetching mail.

Reasons for choosing Thunderbird

We thought it was a better deal. We were very wrong

Austin M.

Verified reviewer

Pharmaceuticals

51-200 employees

Used daily for more than 2 years

Review source

Reviewed October 2023

Thunderbird, the GO-TO Lightweight mailing client

We started using Thunderbird as an alternative for our outlook clients, performing even better during the days, and making it a go-to software for our new installations.

Ratings Breakdown

Ease of use

Functionality

Pros:

I think the most impactful thing about Thunderbird is the community that uses the software, making it evolve constantly and performing better. It is awesomely easy to set up and makes yourself feel really at ease, with a simple UI and plugin enhancements that make it even better.

Cons:

I think Cloud support could be more extensive, to make Thunderbird evolve to the next level, the team should really make it an objective inside the application.

Reasons for switching to Thunderbird

We made the switch because of the problems and security issues, we resolved them with plugins + firewalls, features that could be only be accomplished with Thunderbird.

Jose J G.

Verified reviewer

Market Research

2-10 employees

Used daily for more than 2 years

Review source

Reviewed November 2022

One of the Best Email Management Tools

I have been using Mozilla Thunderbird in a daily basis for years. I have seen how committed Mozilla Thunderbird team is to keep Thunderbird updated with the latest technologies and features. My experience is great so far andI totally recommend it to my clients.

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

I like the user interface, the add-ons and extensions, and how easy is to manage emails from my different online properties and domain names.

Cons:

There is no cons. Mozila Thunderbird is great.

Reasons for switching to Thunderbird

I feel that Mozilla Thunderbird is faster than Outlook.