Is it Possible to edit a List Email in draft status that's associated to an Organization-Wide email address if you're not the original email draft creator?

Hi Community,     I am trying make edits to a draft email that someone else created. They created it using an Org-Wide email address b/c it needs to look like it's coming from the company. But we are collaborating on it so we both need to be able to edit, add pics in-line and text etc.    But every time I try to edit the body of the mail and then click the 'save as draft' it says "You do not have permission to execute that operation".    ps. Im the salesforce admin and what Im actually trying to do is allow for a select group of people to be able to make edits and save drafts on the same email that looks like its being sent from the company (using Org-Wide email).    If someone knows how to work around this error, pleaaaase help me, haha.    Thanks in advance!