Alternative apps to Mozilla Thunderbird Earlybird:
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Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features.
- Freeware
- Windows, macOS, Linux
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Free, standards-based electronic mail client suitable for use by single or multiple users on single computers or network.
- Freeware
- Windows
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Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA).
- Freeware
- Windows