Great question! To find out more about why a particular message was marked as spam, see Google’s web page: Why messages are marked as Spam.
At UCSB, common reasons why particular messages may go into spam are: Sending from a tool like Constant Contact using certain words that are suspicious, or configuring filters or settings in the Google Web App or a mail client (such as Outlook, Thunderbird, Apple Mail).
In addition, everybody should train their Connect account as to what is spam and what is not. Here’s how:
1. Login to Connect via the Google Web App.
2. Follow the steps in the Using Connect article, Managing Spam/Junk Mail in Google Apps
If you need assistance, contact your Tier 1 support personnel.