How can I prevent important messages from ending up in my spam folder?

Helen: How can I prevent important messages from ending up in my spam folder?
I am a pet expert on AllExperts and a member of several Yahoo groups. Every couple of months, for no apparent reason, Yahoo puts important messages from AllExperts and messages from Yahoo groups into my spam folder. Why would Yahoo’s filter think messages from Yahoo groups are spam? And how can I prevent this from happening? Does Yahoo do this intentionally, to make people look at their spam folders???

Answers and Views:

Answer by Jared N
Click on those emails you will see a button that says “not spam” click that it will unblock AIIExperts (yahoo must have blocked them for no good reason) if that doesn’t work if your really really desperate for those emails to not be spam then turn your spamguard off (warning: this could cause millions of spam emails in your normal email folder)

Answer by Steve
Whenever an email comes in click on the not spam button. This teaches Yahoo that it isn’t spam afterall so it will update your settings after a few times.

Or you can create a filter that will send all the emails to a folder, or your inbox.
https://email.about.com/cs/yahoomailtips/qt/et052702.htm