Users find the WordPress plugin helpful for seamless integration with Zoho Mail, enhancing ease of email communication from their WordPress sites. They appreciate the plugin's straightforward setup and effectiveness in improving email delivery and reliability, even for websites on poor hosting services. Its ability to maintain email functionality independently of web server status is also valued. However, users report significant issues, including confusion during setup due to unclear documentation, persistent "Invalid Client Secret" errors, and insufficient support. The lack of support for "reply-to" custom headers and HTML email format conversion issues are notable drawbacks, necessitating substantial time and effort to troubleshoot.