I've been using a product from Envato, MyMail, which is clunky at best to compose messages however includes at no extra cost all the tools that WYSIJA charges a subscription fee for. With a one-time $35 I get:
# lifetime updates
# track individual opens, clicks, unsubscriptions & bounces
# auto responders
# campaign scheduling
# send the same newsletter to single address
# built-in SPAM scoring
# johnny-on-the-spot support
# and more.
Basically everything WYSIJA offers for free plus all their subscription features. Now, as I mentioned, the MyMail message composer is frustrating. If you want to go along with the layout fine, but if you want to ever so slightly modify something, forget it! Maybe it's just me because the guy easily has several thousand sales. However I have way too many other things going on most days to spend hours coding an email, so this is the only bright spot I found with WYSIJA.
Stuff is still broken or features missing:
# Clicking on stats opens a page with 5 columns. Clicking any of these thinking you can sort by that column instead pops an error message, "Your request can't retrieve any subscribers. Change your filters!" Okay now what?
# Nit picking but, names under Stats are listed as Last, First - would have preferred a way to display names under stats as First, Last.
# I got a bounce (bad email address) and found no way to resend the newsletter to that one subscriber. Pretty sad because it was a client using an auto responder to notify of his new email address. This missing feature also handicaps you if you get a new client and want to send them an already sent newsletter. It looks like you have to duplicate and send another newsletter for each new email address - pretty clunky.
With MyMail I probably just need to bear down and learn the UI, because for less than half the price of one year with WYSIJA I get a whole lot more.