I know people that used it because it was self contained for Windows if I remember correctly. I remember one person running the installation off of a Zip drive back in the 90's. I warned them that Zip disks like to randomly self destruct and he'd better be making backups.
Used to rely heavily on this, until an upgrade on one of my systems blew up the entire profile and I just stuck with webmail mostly. On my phone I have gmail, Outlook and Thunderbird (forked from K-9).
