Siker writes: Email Service Guide asked "Why the heck are people still using POP3 [...instead of IMAP]?" Remarkably the answer does not seem to be "because they don't know any better" because at Email Discussions an intense debate erupted over the topic. In this day of large storage server accounts and multiple access devices for email accounts, is there a reason other than habit for POP3?
We warn the reader in advance that the proof presented here depends on a
clever but highly unmotivated trick.
-- Howard Anton, "Elementary Linear Algebra"