Eudora is an e-mail client used on the Microsoft Windows and Macintosh operating systems.Eudora was developed by Steve Dorner in 1988 as a part of his studies at the University of Illinois at Urbana-Champaign and was acquired by Qualcomm in 1991.
Eudora pioneered the concept of a folder list pane that was always present. Originally distributed freely it was commercialized and offered in both a Light (freeware) and Pro (commercial) product, it is now distributed with three modes: adware, payware (removes ads), and the classic Light mode.
Eudora (6.0.1) added support for Bayesian filtering of spam with a feature called SpamWatch. Eudora (6.2) added a scam watch feature that flags suspicious links within e-mails in an attempt to thwart phishing.
Eudora has support for "Stationery", that is a standard reply that is prepared ahead of time to a common question. Eudora stores e-mails in text files, rather than in a database like Microsoft Outlook, allowing the user to back up portions of their e-mail correspondence without backing up the entire database.
Eudora supports the POP3, IMAP and SMTP protocols. Eudora is property of Qualcomm Incorporated.
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Eudora is a powerful, flexible and great email software that cans spam precisely, too, and shows nary a weak point. Leveraging the statistical spam filter to organize good mail would be good, though. Few of Eudora's best features (the spam filter and fast search) are only available in the paid version.