To ensure maximum professionalism, the app features integrated spell-checking functionality. The software includes a number of advanced filters that help you keep you mail organized. You can easily set up IMAP, SMTP, or POP3 accounts, and you can import contacts and existing mail from your current email client. Once you've downloaded and installed Thunderbird, setup is a breeze. Thanks to the new Gecko 5 engine, the app is more stable and quick than it has ever been. One of the most alluring features of Firefox is that it can be upgraded and personalized with extensions, and that same functionality has been extended to Thunderbird. The current version includes a sleek user interface with email tabs for intuitive management and organization. It has the ability to work with virtual identities, and its spam filter is second to none. This software is not only free to use, but it has won several awards for its email management solutions. Mozilla Thunderbird comes from the same developers who created Firefox, and it offers desktop email support that rivals Outlook, Microsoft's benchmark email client.

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