1) Emails have delays in them, which can mean that you get an alert for a condition after that condition has already ended (and the tray icon has gone away). There are a number of possibilities here, but for troubleshooting, it's sometimes best to get rid of all the delays, and then re-add the delays once you trust that things are working as expected. These delays come in the form of "Maximum email frequency" and "How many minutes to wait before sending". Set both of these to 0 and then see if things behave a bit more the way you're expecting.

2) A non-relaying SMTP server could definitely cause problems with the "To" address. Did updating your SMTP server also correct the blank email problem?

- Pete