The best thing about this product was that it removed my old junk mail, so I could stop wasting time reviewing emails from people who weren’t important to me anymore! It also made sending messages much faster because of how quickly they were being processed by their system; there wasn't any delay in receiving responses back like other products had with older computers or slower internet connections.
There really isn't anything bad at all as far as features go - everything works great but sometimes when you have lots going through your inboxes things can get glitchy if something goes wrong (but not often). If anyone has problems getting rid of an annoying person's e-mails then try using JEF first before trying another program or website out there since we only used them until now and never experienced issues after switching over. We are able send hundreds every day without having delays due to too many items coming into.