Enhanced email and the Email Message object
|Knowledge Article Number||000239922|
|Description||When Enhanced Email is activated, emails sent from Salesforce are logged as Email Messages and Tasks. The email messages are displayed in the Related List on the Object the email is sent from. The Tasks are not displayed on records in Salesforce with Enhanced Email activated. See the following:
Considerations for Enabling Enhanced Email
The Email Message record respects established mail paradigms for compliance. The email record in Salesforce has to be a non-editable, accurate representation of the mail the end user receives. Unlike the Task object which is editable, Email Messages cannot be edited through the User Interface or the API.