Sometimes, the participant or automatic notification emails sent through Wizathon will end up in your spam folder even though our email servers and settings are set properly for email delivery. 

This problem can be caused by whatever spam scanner your email server is using.  There are many scanners, such as Spam Assassin, which require your server to "learn" what is spam and what isn't.  Marking emails as "not spam" helps, but it takes thousands of "not spams" to accomplish this. Unfortunately, these spam scanners report a lot of false positives in their quest to sort through the real spam. Changing the from email address will have no affect on the delivery to your spam folder.