# Page 4 | Thunderbird Reviews 2026. Verified Reviews, Pros & Cons | Capterra

> Page 4 - Is Thunderbird the right Email Management solution for you? Explore 156 verified user reviews from people in industries like yours to make a confident choice.

Source: https://www.capterra.com/p/230507/Thunderbird/reviews

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Thunderbird

4.4 (156)

[View alternatives](https://www.capterra.com/p/230507/Thunderbird/alternatives/)

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Last updated March 13th, 2026

# Page 4 - Reviews of Thunderbird

## Showing most helpful reviews

Showing 76-100 of 156 Reviews

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Most Helpful

Rating

Company Size

Reviewer's Role

Length of Use

Frequency of Use

VR

Verified Reviewer  
Gerente  
Logistics and Supply Chain  
Used the software for: 2+ years

### "Thunderbird: es un cliente de correo electrónico gratuito y confiable"

April 22, 2023

5.0

De los clientes de correo gratuitos estoy convencido que es el mejor.

Pros

Primero que es gratuito, no tiene límite de cuentas de correo, se puede cambiar el tema, admite diccionarios para corrección, permite firma en texto, imagen o html, si bien es básico en cuanto a su configuración, se pueden adicionar múltiples extensiones para mejorar la productividad.

Cons

Es algo que no me incomoda, ya que las cuentas se cargan una sola vez, pero a veces me cuesta configurar las cuentas de correo de dominio propio.

Review Source

Angel José V.  
Inspector  
Government Administration  
Used the software for: 2+ years

### "El Mejor Cliente de Correo Electrónico Profesional Gratis"

January 14, 2023

5.0

Excelente.

Pros

Que es sofware libre y compatible con cualquier servidor de correo electrónico.De uso fluido y profesional. Con un gestor de contactos tambien compatible y completo. Además te permite el uso de POP3 para bajar tus correos directamente a l ordenador y leerlos online

Cons

Hay cierta lentitud en el arranque del programa hasta que levanta toda las librerías.

Reason for choosing Thunderbird

Por lo dicho anteriormente

Review Source

JF

Jamie F.  
Lead Technician  
Information Technology and Services  
Used the software for: 2+ years

### "Thunderbird is My Only Consideration with Mail Programs"

October 25, 2023

4.0

I've used Thunderbird over Outlook and other Mail apps for years. Occasionally I try Outlook again and I even wrote my own email program but always go back to TB..

Pros

It works with Hotmail and Gmail accounts which not a lot of email programs do. There is lots of community support and many add-ons for all kind of things.

Cons

I always when trying to select the top email accidentally click the column header and re-order the emails which is annoying, would be nice if you could lock it.

Switched from

[Microsoft Outlook](https://www.capterra.com/p/227138/Microsoft-Outlook/)

Outlook became too costly and I found it un-versatile.

Review Source

JZ

Jeffrey Z.  
Founder  
Farming  
Used the software for: 2+ years

### "Best Free Desktop Email Program"

December 8, 2022

5.0

I use it on a daily basis to send dozens of emails. It works very well, & I love the fact that PDF's open within the program

Pros

It's feature rich, open source, & funded by donations. It gets updated very regularly with new features, etc.

Cons

My biggest gripe is the fact that you can't easily switch between signatures. & that to use HTML signatures, you need to save them as a file

Review Source

Gustavo B.  
Director  
Marketing and Advertising  
Used the software for: 2+ years

### "Great alternative to Outlook"

April 23, 2022

5.0

Thunderbird is a great management system for emails, it is easy to use, and represent a great alternative for any company looking to reduce in terms of licenses.

Pros

Open Source ( free to use) Good Email Management System Easy to install and deploy

Cons

It does not offer any cloud based system that might allow the software to be used away from where it was installed and configured.

Reason for choosing Thunderbird

Thunderbird is open source and can handle the workload just as good as Microsoft Outlook.

Review Source

VR

Verified Reviewer  
Instructor  
Airlines/Aviation  
Used the software for: 2+ years

### "Desde hace años un referente en la gestión de correos electrónicos"

May 5, 2023

4.0

Pros

Desde años, Thunderbird ha sido todo un destacado en lo que a gestión de correos de servidores y terceros se refiere. Su facilidad a la hora de configurar multiples cuentas y cambiar entre ellas, hace que cualquier usuario lo tuviera instalado en su ordenador personal.

Cons

Quizás con el tiempo se ha quedado un poco atrás y es un software más de gestión de correos con un gran pasado.

Review Source

VR

Verified Reviewer  
Computer and Systems Engineer - Ph.D.  
Information Technology and Services  
Used the software for: 1-2 years

### "Bon logiciel gratuit de gestion des e-mails"

February 1, 2023

4.0

Pros

Facilité de configuration et de gestion de plusieurs comptes de messagerie à l'aide d'une navigation aisée et d'une interface utilisateur simple. Facile à installer et à gérer. Si vous recherchez un équivalent gratuit d'Outlook, ce logiciel est fait pour vous.

Cons

Il ne dispose pas d'une version pour Android et ne permet pas de synchroniser les données d'accès avec le cloud. J'ai eu quelques rares problèmes où l'application se bloquait pour une raison ou une autre et se plantait en essayant d'afficher mon courrier électronique.

Review Source

emiliano G.  
senior programmer analyst  
Information Technology and Services  
Used the software for: 2+ years

### "Per chi usa ancora i client di posta da installare sul PC, va bene"

October 26, 2022

4.0

Pros

Gratuito ed efficiente ed open source garanzia Mozilla

Cons

Macchinoso come tutti i client da installare sul PC

Switched from

[Microsoft Outlook](https://www.capterra.com/p/227138/Microsoft-Outlook/)

Migliore e più al passo con i tempi rispetto a Outlook

Review Source

TS

Tommaso S.  
In cerca di occupazione  
Information Technology and Services  
Used the software for: 2+ years

### "Client di posta Mozilla Thunderbird"

February 12, 2023

5.0

Pros

Thunderbird è un ottimo client di posta gratuito , sviluppato dall'organizzazione senza scopo di lucro Mozilla. La sincronizzazione con le varie caselle email è molto veloce e precisa, comoda la funzionalità di poter avere in un'unica lista tutte le mail provenienti da tutti i nostri account. E' possibile anche installare delle estensioni che ne aumentano notevolmente le funzionalità, ad esempio io ho installato un'estensione che mi ricorda di aggiungere un allegato quando nel testo della mail da inviare ci sono determinate parole tipo "allego" o "allegato". Questo è solo un piccolo esempio, provatelo e non ve ne pentirete!

Cons

Dopo qualche mese il programma rallenta un po' con l'aumentare delle mail ricevute e quindi presenti nel database

Review Source

DC

Domenica C.  
ASD marketing manager  
Entertainment  
Used the software for: 1-2 years

### "Ottima alternativa a software più blasonati"

October 9, 2023

5.0

Ottimo, lo uso spesso senza mai avere problemi

Pros

Lo uso da tanto tempo su uno dei miei pc e sinceramente lo trovo molto leggero e veloce. fa tutto quello che ci si può aspettare da un gestore di posta

Cons

Potrebbero essere migliorati i filtri e le ricerche, ma in generale un ottimo prodotto

Switched from

[Microsoft Outlook](https://www.capterra.com/p/227138/Microsoft-Outlook/)

Gratuito e leggero...forse anche più stabile

Review Source

Robert M.  
Freelancer  
Computer Software  
Used the software for: 1-2 years

### "Free and useful "

August 17, 2022

4.0

I like it. It is smooth and very fast.

Pros

It is working very well. When you add your email address, it sets up everything for you. There are a lot of extensions that you can add functionalities to Thunderbird. As it has a lot of users, it is bugless

Cons

I do not know why they have separated outgoing server settings in another section from the account setting. The search and filter are not very functional, and I could not find my desired result from it. Maybe it is my mistake, So at least it is not user-friendly enough to learn and work with.

Review Source

SL

Stephen L.  
Senior Lecturer  
Higher Education  
Used the software for: 2+ years

### "Excellent Desktop Email Client"

September 30, 2021

4.0

Thunderbird is excellent desktop client for users that require advanced control over their email.

Pros

These days many email clients are entirely online which has advantages but it also comes with some disadvantages. You need to be online to view and respond to email and you need to trust that your email provider will store your email for you and never prevent you from accessing it. Thunderbird resolves these issues because it runs locally on your machine. Connectivity is only required when sending and downloading email. You email is archived locally and the size of the archive is only limited by your available hard drive space. Thunderbird also integrates well with providers like Gmail. I use it to keep a local copy of my Gmail. Thunderbird is free, open source and comes with many add-on which often additional functionality.

Cons

Thunderbird updates often break existing add-ons and there is a delay until these add-ones are updated to work with the latest version.

Review Source

Ahmed Samy E.  
Digital Marketing Consultant  
Marketing and Advertising  
Used the software for: 2+ years

### "Good free email management software "

May 5, 2022

4.0

Pros

Thunderbird is totally free as it's developed by Mozilla, so you won't pay any subscription fees. You can manage multiple email inboxes from one interface and open each email in a separate tab within the software interface.

Cons

I think they should develop the right to left (RTL) editing function to be fully compatible with RTL Languages, when I write a message in Arabic I notice that dots at the end of phrases are reversed and moved to the beginning, the Arabic phrases are also messed up when writing English word within them.

Review Source

ML

Mireille L.  
Assistante adv  
Printing  
Used the software for: 2+ years

### "Boîte mail très pratique "

February 15, 2023

5.0

J’utilise depuis environ 7 ans et suis en globalité satisfaite

Pros

Facile d’utilisation et très complet. Très bonne qualité /prix

Cons

Problème avec certaines signatures qui rend mes mails en spams

Review Source

VR

Verified Reviewer  
GM  
Telecommunications  
Used the software for: 2+ years

### "For a mail programme it doesn't get more standard and trustworthy then this."

July 8, 2022

5.0

Pros

It handles my mail without any real issues and has been doing so for many years so ...it even handles Very big mailboxes easily. Some extensions needed for some basic things even but all work pretty much perfectly.

Cons

Recently upgrades have broken plugins more often which is annoying.

Review Source

CG

Cristian G.  
Ristoratore  
Restaurants  
Used the software for: 2+ years

### "Un successo del passato"

February 20, 2024

4.0

Il primo gestore di posta elettronica non si scorda mai! Forse non è riuscito a stare al passo con i tempi moderni. Il programma si dovrebbe snellire e rimodernizzare per tornare nuovamente competitivo.

Pros

Si gestiscono facilmente account diversi

Cons

Aggiornamenti penalizzanti e lenti. Non di rado si presentano crash improvvisi

Review Source

PN

Paulo N.  
Continuos Improvement Manager  
Automotive  
Used the software for: 2+ years

### "Software de gestão de emails"

October 3, 2023

5.0

Excelente integração com o gmail.

Pros

Rapidez e facilidade na troca de informação com parceiros de negócio. Excelente alternativa sem custos, em relação a outro tipo de software.

Cons

A ultima versão 115.2.2 tem pouca flexibilidade para personalizar a apresentação do ecrã inicial. Atualizações constantes.

Switched from

[Microsoft Outlook](https://www.capterra.com/p/227138/Microsoft-Outlook/)

Software integrado no Microsoft 365

Review Source

OM

Olivier M.  
Digital Project Manager  
Internet  
Used the software for: 2+ years

### "Test Thunderbird"

November 30, 2023

5.0

Pros

L'ensemble complet de ses fonctionnalités et son caractère open source comme FireFox.

Cons

Un ergonomie parfois perfectible surtout pour l'accès à ces nombreuses fonctionnalités.

Switched from

[Microsoft Outlook](https://www.capterra.com/p/227138/Microsoft-Outlook/)

Thunderbird vient en complément d'Outlook pour certaines boites mails.

Review Source

CW

Christoph W.  
Project Manager  
Information Technology and Services  
Used the software for: 2+ years

### "Anpassungsfähig und leistungsstark"

January 2, 2024

4.0

Pros

Man kann ziemlich alles anpassen Das Handling auch grosser Mengen an Emails per IMAP gelingt problemlos und schnell

Cons

zuviele Optionen, manche User kann es verwirren Manche User vermissen die Integration in Softwaresuiten

Review Source

EK

Erik K.  
Sr. Manager of L&D  
Internet  
Used the software for: 1-2 years

### "A great replacement for Outlook"

July 29, 2021

5.0

I made the switch to Thunderbird when my outlook experience became too frustrating with lost emails and sent mail stuck in outbox oblivion. Since switching I've had nothing but great experience with Thunderbird.

Pros

I love that Thunderbird is reliable. Having used Outlook for over a decade, I was a bit hesitant to switch, but am very glad I did. I had numerous problems in the past with outlook which are no longer an issue since I've switched to Thunderbird. Thunderbird works the way I expect it to, and I never lose mail or have items stuck in my outbox. I highly recommend!

Cons

The thing I liked least about Thunderbird initially was the layout and aesthetic, but that quickly disappeared as I became familiar with where everything is located and the icons for everything. Now I would say the layout is very simple and less complicated than Outlook.

Review Source

Rocio C.  
Customer Support  
Electrical/Electronic Manufacturing  
Used the software for: 1-2 years

### "Free to use and highly customizable"

August 26, 2022

4.0

For many years I used Thunderbird as my primary email server for business purposes. It is a very complete tool and free to use but I currently use other more up-to-date tools.

Pros

It allows you to customize many aspects of the inbox, as well as the templates and privacy and security options.

Cons

Its use is less widespread than that of other email servers.

Review Source

GT

Gianni T.  
Web Designer  
Internet  
Used the software for: 2+ years

### "Thunderbird è un ottimo gratuito prodotto per la gestione delle mails."

October 24, 2022

4.0

Mi trovo bene anche se ultimamente uso più spesso Gmail. Ma per provare le webmail è ancora il mio software preferito.

Pros

Thunderbird è un prodotto gratuito e Open Source sviluppato da Mozilla che storicamente sviluppa e mantiene un software robusto e sicuro.Molto comodo soprattutto per spedire webmail in quanto consente di inserire direttamente l'html nel corpo della mail.

Cons

Occasionalmente ci si può imbattere in alcuni malfunzionamenti.

Review Source

VR

Verified Reviewer  
Responsable de marketing Online e-commerce  
Cosmetics  
Used the software for: 2+ years

### "Un gran gestor de correo electrónico "

November 16, 2022

5.0

Pros

Lo utilizamos en nuestros MAC y es un fantástico gestor de correo electrónico, cumple perfectamente con nuestras necesidades ¡plenamente recomendable!

Cons

No hay nada de este software que merezca una opinión negativa

Review Source

PE

Paul E.  
Manager  
Retail  
Used the software for: 2+ years

### "A Good Old-fashioned Email Application"

August 15, 2021

5.0

Basically it just offers us a really simple, low maintenance, secure system for keeping track of our customer's e-mails.

Pros

The hint to what I like about it is in the title, yes it's been around for a long time but when something works as well as Thunderbird does you don't need to change! From a security point of view I like the fact that it isn't cloud based with all our business customer's personal mails and details stored on some other corporation's servers. It's a breeze to setup new accounts, and their are various extensions that allow you to unleash more power from the application.

Cons

There isn't really anything that I don't like about this software. We have been using for probably 12 years since we opened our business and have never had an issue.

Review Source

SP

Shane P.  
Security system engineer  
Computer Networking  
Used the software for: 6-12 months

### "Thunderbird email software review"

November 3, 2023

2.0

Overall Thunderbird was an okay software if you're just starting out but as your company grows I suggest investing in something better.

Pros

I like the fact that Thunderbird was free and worked for the most part.

Cons

I dislike the fact that Thunderbird was more of a home use and not a business quality email client.

Review Source

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