Eudora had this awesome feature that detected if you were about to send a flame / testy short reply, and warned you against it. I seem to remember a “spicy pepper” icon? It saved me from embarrassment more than once. I hope the modern email client maintainers can rescue that bit of functionality.
While only tangential to the article, the short story from which Eudora gets its name is fascinating in both its depth and simplicity: <a href="http://art-bin.com/art/or_weltypostoff.html" rel="nofollow">http://art-bin.com/art/or_weltypostoff.html</a>
Found an old CDR from probably 98 or so a while back and it had my Eudora folder backed up on it. On a whim I clicked the exe and much to my surprise it started right up with all my mail intact. I'm so used to software just stopping working after a time that I was completely impressed.<p>Not to mention, that was certainly a trip down memory lane reading those emails (and cringing at many). Worth tracking down if you have one laying about.