Step 1: Add and verify your domain, or buy a new domain with Zoho.
Step 2: Add users and create custom domain email accounts (or) Import users from a CSV file or from your Active Directory.
Step 3: Create domain-based email accounts for groups, using distribution lists to allow multiple members to receive emails from common accounts like email@example.com or firstname.lastname@example.org.
Step 4: Configure your domain’s MX records to point to Zoho Mail servers, so you can start receiving emails to your domain accounts in Zoho.
Step 5: Simultaneously start email migration for your users.