There already is a thread with Gmail notifiers (and other Gmail stuff)
Check out
this post.
Anyways this thread is about MsgPlus! 3.50 Pop3 Gmail Limitations, not about alternative Gmail checkers. Lets try and stay on topic
Checking Gmail works fine (the counts..ofcourse the checkin from Plus! works perfectly fine) if you forward everything into your pop3 email client (ISP e-mailaddy - not leaving any messages on the server or let Gmail archive the copy) or when you just follow the tips mentioned before:
- Archive messages in inbox after you read them (you can still access em in "all mail")
- After you've sent mail (and you find the email count too high) go into Gmail settings > forwarding and pop ... check "enable POP only for mail that arrives from now on", click save.