Contact form from my website is going straight to zoho spam

I need some help. I just signed up for Zoho Mail as the mail provider for the domain that I purchased with GoDaddy.com.

I just sent a test e-mail from the contact form on my website and it is going straight to Zoho Mail spam.

I use Mozilla Thunderbird to check my zoho mail and I can't have messages from my website's contact form going straight to spam because I will never receive the message in Thunderbird.

I read on another post about blacklisted IP addresses. Could my IP address be blacklisted? Is there a way to find this out?