Actually ,my organization employee maintaining the Zoho books with their domain based email id in zoho , Now we planned to migrate the mail server to ZOHO mail , So while adding the users its complaint like users already exists , It just send the invitation to the users email account , But currently we fully migrated the mail server to zoho , So There is no chances to get the invitation so how to add these types of users in Zoho mail , please do needful asap .