In coexistence you have certain set of users on Microsoft 365 and rest of users exist on Zoho Mail
The hybrid setup allows sharing same domain name for both accounts
Bundled Email Security (ATP) for Zoho mail
Drive better ROI with the Zoho + Microsoft 365 Hybrid Solution
Seamless internal mail-flow is maintained between Zoho mail and M365
Use M365 for power users who require advanced features, while general users can use Zoho Mail.