Showing emails sent from sales@ourcompany.com

Showing emails sent from sales@ourcompany.com

Please advise on showing emails sent from  sales@ourcompany.com to customers email.

It seems that zoho will only allow  sales@ourcompany.com to be associated to 1 account. 

We have other services that email from sales@ourcompany.com to the customers email that we would like to see under the records email history.