We use and rely upon synchronization of emails from our corporate Gmail email accounts, into Zoho CRM for both leads and Contacts.

Questions:

If an employee of ours whose emails are currently synchronized, leaves the company and that email address is deactivated, do the emails disappear from CRM? Is there any way to prevent that, if so?

If we change the email address of a contact or lead, do emails previously associated with their old email address disappear from the Emails section? If so, is there any workaround on this?