Emails that should be in my inbox end up going to spam. How do I prevent this?
If legitimate emails are marked as spam, right click on the particular email and mark it as Not Spam.
When the emails are marked appropriately, Zoho Mail automatically adjusts the classification and whitelists these senders. If the emails go to spam even after the sender's address has been whitelisted, it could either be due to incorrect standards followed by the server through which the email has been sent, or due to SPF failure.