Mozilla

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1,016 reviews
  • 19 profiles
  • 14 categories
Average star rating
4.4
Serving customers since
2005

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Thunderbird

340 reviews

Thunderbird is a free, open-source email client developed by Mozilla, designed to provide users with a secure, customizable, and efficient email management experience. Compatible with Windows, macOS, and Linux, Thunderbird supports multiple email protocols, including POP and IMAP, allowing seamless integration with various email services. Its user-friendly interface and robust feature set make it a preferred choice for individuals and organizations seeking a reliable alternative to proprietary email clients. Key Features and Functionality: - Adaptive Junk Mail Controls: Thunderbird's intelligent spam filters learn from user actions to effectively identify and segregate unwanted emails, reducing inbox clutter. - Integrated RSS and Blog Reader: Users can subscribe to RSS feeds and blogs directly within Thunderbird, enabling them to stay updated with the latest news and content without leaving the application. - Saved Search Folders: This feature allows users to create virtual folders that display messages based on specific search criteria, facilitating efficient email organization and retrieval. - Global Inbox Support: Thunderbird enables the consolidation of multiple email accounts into a single inbox, streamlining email management for users with several accounts. - Message Grouping and Labeling: Users can group messages by attributes such as date, sender, or priority, and apply labels for easy categorization and prioritization. - Privacy Protection: To safeguard user privacy, Thunderbird automatically blocks remote images in emails from unknown senders, preventing potential tracking and data collection. - Extensibility with Add-ons and Themes: Thunderbird supports a wide range of add-ons and themes, allowing users to customize the application's functionality and appearance to suit their preferences. Primary Value and User Solutions: Thunderbird addresses common challenges faced by email users by offering a secure and customizable platform that enhances productivity and privacy. Its adaptive spam filters and privacy features protect users from unwanted emails and potential threats, while the integration of RSS feeds and blogs consolidates information management within a single application. The ability to manage multiple email accounts through a unified inbox, coupled with advanced search and organization tools, streamlines email workflows and reduces the time spent managing communications. Furthermore, Thunderbird's open-source nature and support for add-ons empower users to tailor the application to their specific needs, ensuring a personalized and efficient email experience.

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Mozilla Reviews

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Star Rating
656
281
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13
5
Ahmed N.
AN
Ahmed N.
Customer Service Operations ManagerMid-Market (51-1000 emp.)
04/15/2026
Validated Reviewer
Verified Current User
Review source: Organic
Translated Using AI

The Best Browser for Privacy and Security Protection

I have been using Mozilla Firefox for over 10 years daily at work and at home. The best thing is the security in the browser and the many extensions I can benefit from, including Firefox-approved ad blockers. Recently, the browser's VPN was added, which is fast and maintains privacy. Now I can browse the internet safely away from annoying and harmful ads and keep my data from leaking online. The browser always has a policy of protecting users from sites that try to take digital fingerprints and does everything it can to protect users. Installation is very easy and light on the device.
Verified User in Staffing and Recruiting
US
Verified User in Staffing and Recruiting
Small-Business (50 or fewer emp.)
03/16/2026
Validated Reviewer
Verified Current User
Review source: Organic

Still the most reliable open-source email client out there

I have to manage multiple email accounts from different providers (IMAP and Exchange), and Thunderbird handles this effortlessly. It is completely free, open-source, and highly customizable. The local filtering rules are incredibly powerful and allow me to keep my inbox clean automatically. I also really like the new "Supernova" UI update, which makes the software look much more modern than a few years ago.
Maryam C.
MC
Maryam C.
IllustratorSmall-Business (50 or fewer emp.)
02/27/2026
Validated Reviewer
Verified Current User
Review source: G2 invite
Incentivized Review

Intuitive, Easy, Fun AI Call Experience

It was very intuitive to filled out the answers. I just needed to copy, paste and format it the way I wanted. Testing out the AI call was fun and very easy. My friend also called to make an appt and she loved it and thought the process was intuitive.

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What is Mozilla?

At Mozilla, they are a global community of technologists, thinkers and builders working together to keep the Internet alive and accessible, so people worldwide can be informed contributors and creators of the Web.

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Year Founded
2005
Website
www.mozilla.org