We are able to send via email invoices, estimates and also stand-alone emails from within Zoho Books. However, there is no way to read the content of those emails once they have been sent. As far as I know, they also do not appear under individual Accounts in Zoho CRM. Apparently there is integration with GMail and Outlook Live but I use neither of them. This would be very helpful to review the emails sent here: https://cl.ly/76abcd