Thunderbird 2026: Benefits, Features & Pricing

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On this page

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

Leandro A.

Verified reviewer

Computer Software

2-10 employees

Used daily for less than 2 years

Review source

Reviewed December 2025

Thunderbird Review

I use it as my main email client , both for personal use and for work , it feels comfortable .Big plus that they don't spam you

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

It offers great security , access and conectivity . Fast , light weight email client .Also is open source and doesn't spam you

Cons:

The Ui it's a little outdated . Sometimes it is difficult to find the way to access some of its features.

Reasons for switching to Thunderbird

The send you advertisements all the time .It's really annoying

Hugo G.

Verified reviewer

E-Learning

2-10 employees

Used daily for more than 2 years

Review source

Reviewed May 2025

Good email client, but could be improved

Overall pleased but I'll like to see it improved

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

If the best OSS email clients, it fast and almost without bug

Cons:

Sometimes buggy, slow to open large email of big conversation with a lot of destinations, and conversation history is not always good (the thread construction I mean, being able to read send email and received in a unified way as in GMail)

Reasons for choosing Thunderbird

Use your osn smtp/imap accounts, and it's free

Ireshyn G.

Verified reviewer

Research

2-10 employees

Used daily for less than 2 years

Review source

Reviewed January 2025

Not the best email client

I opt to use other email clients over this as it is feature poor.

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

The product is free to use and relatively easy to setup

Cons:

Many basic features from other email clients are missing and/or hidden.

Stuart P.

Verified reviewer

Information Technology and Services

11-50 employees

Used daily for less than 6 months

Review source

Reviewed August 2025

Amazing for a free product

I was using another free email client that would not let me use different ports for incoming and outgoing mail so when searching for another one thunderbird looked great and has been very good so far.

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

I suppose I like the combination of its quality and price-point, as I use a free version. It is a lot more robust than other free software

Cons:

Some of the styling is a little bit lacking but I need to be fair and say I've not tried to look for settings to change it so maybe it's better to say default styling is poor.

Reasons for switching to Thunderbird

Setting up config between incoming and outgoing mail was fiddly

Nicolas P.

Verified reviewer

Information Technology and Services

2-10 employees

Used daily for more than 2 years

Review source

Reviewed May 2025

A great solution dor maange your mail

Using thunderbird since several years in pro and personal use.

Ratings Breakdown

Ease of use

Value for money

Functionality

Pros:

Very simple to use but could be configurated to have lots of stuff

Cons:

As any other "plugable" software, be sure that any plugin don't create issue

Reasons for choosing Thunderbird

Thunderbird is under free version and very light compared to Outlook

Bill N.

Verified reviewer

Transportation/ Trucking/ Railroad

Self-Employed

Used daily for more than 2 years

Review source

Reviewed November 2024

Thunderbird for Email

I like the ability to use and even build plug ins and add ons to enhance the experience.

Ratings Breakdown

Ease of use

Value for money

Functionality

Pros:

I like that it is open source and works on many different platforms.

Cons:

Sometimes it will take a long time to synchronize using IMAP if the folders get big.

Reasons for choosing Thunderbird

I sometimes had to use Linux systems, so Thunderbird made most sense.

Brendan B.

Verified reviewer

E-Learning

2-10 employees

Used daily for more than 2 years

Review source

Reviewed May 2025

Lightweight and powerful.

I have used it for email daily. It offers all the features you might expect from a fairly lightweight email client.

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

Free, open, power, highly customizable email client. It outperforms every other email client I have used.

Cons:

I have had certain performance issues that I could not explain or fix. These were resolved after I did a clean install of Windows (for other reasons).

Tommaso C.

Verified reviewer

Design

2-10 employees

Used daily for more than 2 years

Review source

Reviewed October 2024

A robust all standard email management software for connoisseurs

A software that is still actual and works well. Multi option and multi accounts management. Maybe too multi when you have a lot of accounts to manage.

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

Total control on your email in every possible configuration

Cons:

as much as this is also its strength, it suffers from a traditional ux. Although Thunderbird looks neither old, nor is it sloppy in its graphic details, if you could open Netscape 3 mail, you would still recognize the origins of this software today.

Robert K.

Verified reviewer

Civil Engineering

2-10 employees

Used daily for more than 2 years

Review source

Reviewed March 2025

Great for multiple emails