Email lies at the heart of our business -- customer support and customer contact is critical to our survival. This is not something that can be relegated to a Web UI or just any old client interface. Thunderbird provides small organizations (like ours) a free Email client that is full-featured, fast, and efficient. I can't imagine trying to use anything else!

The Thunderbird Email client provides a fast and easy way to corral multiple Email addresses. With support for POP3 mailboxes, you can pull your data off the Email server and retain/manage it all locally, which is great when you have to travel and may not always have access to the Email server, or for when you want the extra security of getting the data off of the Internet quickly. With IMAP support, you can enable access to a shared Email queue, allowing multiple employees to see and respond to the inbound messages -- ideal for a customer-facing "Sales" or "Support" queue -- and every user can see and search on every reply. All local messages and attachments are stored in a local profile folder, which can be easily moved to a NAS, allowing you to access the Email profile from any machine on the network. You can also synchronize your profile to your laptop so that all of your Email can travel with you into the field, even while disconnected. Add in the intuitive user interface, multiple-calendar features, a solid address book function, and you have an Email client that is hard to beat. Since it's free to use, this makes it even better!

Like with any software solution that you've used for 10+ years, the product does evolve, and they change the UI from time to time. These "improvements" may be beneficial to most users, but moving things around in the UI can slow you down, and the changes can sometimes break automation scripts that rely on specific sequences of keystrokes. Luckily, these occur only about every 2 years or so. Another issue I have is with the built-in calendar. Sometimes it captures an Event from an EMail with an ICS attachment -- and sometimes it doesn't. Apparently, Microsoft Teams doesn't send properly-formatted messages, so this is most often broken, but you can always work around it through manual data entry.

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.

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.

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.

Overall, Thunderbird is a feature-packed email management solution that provides advanced email features and customization options for individuals and small businesses. It is a free and open-source application that supports multiple email accounts, integrates well with other applications, and provides robust security features. However, some users may find the user interface to be complex and the performance to be slow on older computers.

Customizable: Thunderbird Mail is highly customizable, allowing users to personalize their email experience by choosing from a wide range of themes, plugins, and extensions.Advanced Features: Thunderbird Mail offers advanced features, such as message categorization, quick search, and email filtering, which make it easier for users to manage their email and prioritize important messages.Support for Multiple Accounts: Thunderbird Mail supports multiple email accounts, allowing users to manage all their email in one place, reducing the need to switch between multiple email services.Integration with Other Applications: Thunderbird Mail integrates well with other applications, such as calendars, to-do lists, and news readers, allowing users to streamline their workflow and manage their tasks more efficiently.Free and Open Source: Thunderbird Mail is a free and open-source application, which makes it a cost-effective solution for individuals and small businesses.Cross-Platform Support: Thunderbird Mail is available for Windows, Mac, and Linux, so users can choose the platform that best suits their needs.

Complex User Interface: Some users may find Thunderbird's user interface to be complex and difficult to navigate, especially if they are not familiar with advanced email features.Slow Performance: Thunderbird may run slow on older computers, especially when managing a large number of emails and attachments.Limited Mobile Support: Thunderbird does not have a dedicated mobile app, which may make it difficult for users to access their email from their mobile devices.Lack of Cloud Integration: Thunderbird does not offer cloud integration, which may limit its usefulness for users who need to access their email from multiple devices.Limited Customer Support: Thunderbird is an open-source project, which means that customer support is limited and users may have to rely on online forums and community resources to get help.Compatibility Issues: Thunderbird may not be compatible with all email providers, which could limit its usefulness for some users.

Haven't found a better alternative to manage dozens of emails in one spot. Differentiates each of them in a much better way than others.

No native integration with google calendar, have to use a plugin, but still wish the calendar had a better overview.

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!

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!

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.

Thanks for this innovative mailbox helping me benefit my time for more time at home. Please do keep working for this best service.

I use this simple art of sending emails attaching previous workspace references filtering how to respond to their immediate concerns. Thunderbird can classify these contact reports with much ease. This has helped many friends to get actual information with a simple inbox management.

I love adding more rules if less time can explore the most needed response. This plans how I can manage my business anywhere with this free software. This innovation always saves more cost if patches are introduced regularly for advanced users.

I would be lost with Thunderbird. Just to have all email accounts in one tool, without the weird look of web based clients is so much better for me.

Basically to be able to combine all email accounts in one tool, set up fast filters to manage and archive everything, drag & drop mails between accounts.

Nothing really. It has all the features I need and comes with good add-ons.

10/10 overall: Been using it for 15 years!!

(1) secure (2) Quick loading (3) Scalable to multiple accounts for the same user (4) Alias feature (4) Multiple add-ons for advanced features

They need to launch the mobile version too!

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.

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

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

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.

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.

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

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.

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

Of course, I like that it is open-source and free of costs. And I like Thunderbird Filelink. The solution for sending larger files per cloud link instead of sending attachments.

No support per email or phone. Only a knowledge base and a forum.

I've been using this manager for years and I just don't see myself using another desktop version. A good part of the team has already started using the tool and everyone loved it.

The ability to add and manage multiple email accounts draws a lot of attention in this software. We were able to customize each account with different signature, folders and redirects. The search system works very well, with specific filters for each type of search

Sometimes I had difficulty and slowness to do more specific searches, using keywords that were in the body of the email. I've had problems with the manager simply stopping working and having to restart.

While it's ugly, it's still my go-to email application when I'm not using the web. It has every single feature I want from an email client.

I like that it's free and open source, and it's incredibly customizable. There's a ton of community extensions that are available to be installed with minimal setup.

The UI is incredibly outdated. It looks like 20 year old software.

There was some technical issue with my university webmail. So, my university IT team suggested I install thunderbird. It has fewer features than outlook but as a University student, the software works fine for me because I don't need all those outlook features. The alerts and notification is the best part.

Reliable, easy to use, and a good management system for emails.

The user interface is black and white. You can't create rules as we can make in Outlook.

This is probably the email you want if you want desktop email. It'll be around forever and it'll always work.

This is a best-of-class, open source and Free Software desktop email client that works very well with all necessary email protocols.

It is clunky and the UI less polished or trendy than some other applications - for me this is a good thing.

Overall it is positive. We have been very happy with the setup. we use IMAP

Ease of use, simple set-up. We use this across all our platforms.

I am very happy with this software however on occasion when it updates I need to set it up again.

Have used Thunderbird for many many years. Haven't had any issues or problems in recent memory. I have dozens of folders and filters and they work great.

Thunderbird can't be beat as an easy to use yet powerful e-mail client that's FREE.

Honestly, nothing that I can think of right now.

I have set up multiple accounts in Thunderbird, making it convenient for me to receive emails in one place. This setup saves me a significant amount of time.

Thunderbird is incredibly user-friendly and simple to install. It accommodates various mail types and allows for easy configuration. Additionally, it facilitates the management of multiple email inboxes in a single, convenient location, which can be quite intriguing.

I'm happy with Thunderbird, but It takes a little longer to send an email.

I've benn using Thunderbird for several years and have had an overall positive experience with the software. While there are some limitations, the platform's overall stability and features make it a solid choice for those looking for a reliable email client.

Thunderbird is certainly easy to use and well-designed. The initial setup is simple and organizing emails via folders is intuitive, making it easy to manage multiple accounts.

Sometimes syncing with some email services can be slow, especially with accounts that receive a high volume of emails. Additionally, the visual appearance of the interface could be improved, since it appears slightly old compared to some newer competitors.

My overall experience was good as I could retrieve emails without the need to purchase any software.

Overall, the service was great for something that didn't require payment.

I found it slow at times to update with the latest emails.

It allowed me to keep managing my email the way I used to when I was forced to upgrade the operating system of one of my PCs and the old email client wouldn't work any more.

Thunderbird is very versatile. It allows me to check some mailboxes via IMAP, but I can also download the messages from others via POP3 and manage them locally. This is what I needed when forced to leave Live Mail behind.

It took really a lot of work to import my whole message archive from the previous client, and most of it is done manually, including create all folders and make sure my messages ended into the right one.

Its interface is very simple and very easy to understand.

Sometimes we didn’t receive the notification for mails when we closed the application.

I like Thunderbird. It's pretty quick. I have my emails in order. It has very transparent view. Everything is there where i need it.

I don't know. I didn't come up with anything that bothered me.

Nel complesso estremamente soddisfatto, è il mio programma di gestione di posta elettronica predefinito da ormai diversi anni.

Molto facile da utilizzare e funziona molto bene, le notifiche di posta in arrivano sempre puntuali (a differenza di altri software che ho provato) e la grafica è molto intuitiva. Abbastanza semplice aggiungere nuovi indirizzi e-mail. Lo utilizzo da moltissimi anni e ci gestisco tutte e 6 le mie e-mail, per ora ne sono davvero soddisfatto.

Dal mio punto di vista si potrebbe migliorare la parte di ricerca delle vecchie e-mail, credo che funzioni abbastanza bene, ma graficamente è un po' caotica e faccio sempre fatica a ricercare quello di cui ho bisogno. Inoltre mi piacerebbe un app per Android di Thunderbird, che al momento non c'è.