emails going into spam

emails going into spam

I have emails that go into my spam folder occasionally and some times go into my inbox from the same sender.  I go into the webmail spam folder and check off that the emails aren't spam by hitting the "Not Spam" button.  However, a few days later if I get an email from that sender, I will notice it goes into the spam folder.  Is there something I can do here?  Is there a way to get the Zoho spam server turned off and I'll just deal with any potential spam locally using Apple Mail?