Hello,
I have the problem of subscribers getting the same message over and over. I've run the test myself and I've received it about 15 times in the last 30 minutes or so.
Under Additional Options:
- I have Maximum number of Messages set to 1
- A check on do not send message twice.
You can try it by leaving a message on any posting.
http://sonoffiverivers.com/
I'm running Thank Me Later Version 2.0.0.1
On WordPress Version 2.9.1.