A few weeks back I reported on the revival of Calypso, an excellent email program, by the folks at Rose City Software. Their rechristened Courier does everything Calypso did, but it’s got one or two features that may help tip the balance for those of you not sure it’s worth the hassle switching. My favourite feature is its integration with POPFile, which, coincidentally, is my spam filter of choice (and now 99.18% accurate, I’m glad to report.) Anyway, this is the neat bit: Courier allows you to reclassify email that POPFile may have got wrong — marking it as spam, for example, instead of legit email) just be rightclicking on the email in question. Superb.One gripe for Rose City: Can we have better icons? I can’t see the yellow envelope in the system tray, especially after a couple of beers.