Mail transfer to a contact with multiple accounts

Mail transfer to a contact with multiple accounts

Hi,

Since we can only associate one email for a Contact across Zoho, would it be a problem if we want to merge our mailbox in the future? For example, Mr. Jones is the main POC for 5 accounts, once we merge our mail where would the messages go-- is it gonna be copied on all 5 accounts or what way would it be separated based on the company we're conversing about. 

Thanks,

Sheenah