Unable to receive emails from WordPress website contact forms.

Unable to receive emails from WordPress website contact forms.

MX records are set up correctly, and email routing is set to remote. I am using WPForms on my website, which has been configured to send notifications to my Zoho mail. When I configure the notifications to my gmail account it works perfectly but I want to use my Zoho mail for notifications. Please Help. My website is www.integratedhr.co.ke.