Please remember to check your Spam folder in your email occasionally. Sometimes, legitimate email gets “caught” in the Spam filter. This is especially true when a large amount of email is sent out (especially if it includes links). One example would be email that was recently sent from ACT.
Spam is automatically deleted every 30 days. Thus, it is a good idea to check the Spam folder every couple of weeks (hint: a recurring event every 2 weeks on your calendar can be a good reminder).
To check your Spam folder, just click on the Spam tag (probably about 6 tags below the Inbox on the left hand pane of Gmail. I generally scroll through looking at the Sender name.