I used KMail when I was using the KDE Desktop and of course Evolution when in Gnome, and I like both, and I also had used Thunderbird too, even when using Windows, but I used Outlook Express there, as well as Outlook which I also have a copy of, but had used Calypso and Incredimail in Windows as I liked the mail notifiers it had, like when I ran a desktop wallpaper of a lake for example, I had Incredimail set up to have submarine sounds, then the sub would surface, the hatch would pop up and a guy’s voice would say, “E-Mail.” Sometimes I had a butler come out to say “You have mail, sir.” I will say though that for a while, when I brought Evolution up, that it would go off the screen to the left and right-hand side, and I had tried reducing the size, but it still would be off the screen for some reason, even when not maximized and not restored either and moving the cursor back and forth, the smallest would still show off the screen, even using 1280 x 1024 resolution, but that has seemed to have corrected itself somewhere down the line, unless they had an update or upgrade to it.
I haven’t used Outlook for some time, as it was a 2006 version, but it seems to be close to Evolution in some ways, if instead of bringing Evolution up, like if you like the calendar and appointments besides e-mail, I occasionally click on the date and time on the desktop, which shows the calendar, then double-click on the date and then Evolution opens with the appointments, e-mail link and the calendar, etc., but I have just noticed that once I do that one time, then even clicking on the Evolution Icon will open Evolution with the same options or setup showing, instead of the way I had Evolution set up, which was to start in the Inbox and only show the buttons to the other features, but once clicking on the date and time, then on the date, now Evolution opens that same way even when clicking on only the Icon.
Oh yes, as far as e-mail filtering goes, I used to use a program in Windows for that, but I can’t remember the name of it, since that was in Windows and I stopped using it after a while because I didn’t really use it much or I didn’t need it much. I just ignore the spam messages and I see the message topics and headings and a preview and I just delete them, and I sometimes even delete multiple messages by highlighting the top message that I want deleted, then scrolling down to the last message that I want deleted, as long as there aren’t any inbetween that I want to save or read, I’ll hold the Shift button down, then click on the message, which will highlight that message and all of the messages inbetween and will delete all of the ones I don’t want, or I’ll read all that I want to read and/or save first, then just highlight the top and bottom message and delete them all at once.
I’ll also say that my ISP, the telephone company, has made some sort of agreement with Google, so my e-mail gets filtered through the Google servers now, so if you want filtering and can’t seem to get it to work too well, try getting or using a Gmail address as it seems to filter out quite a bit, but I still will check Google or GMail itself, just in case anything that I want is being filtered out, and they delete filtered e-mail once per month I think, so filtering is working great for me.