I don't think this is supported as I have done some research.
Here is an example from a email endpoint.
LiveCycle ES has processed your request and attached the results (if there were any) in this email.
This response to your original email
Subject:Data from EXT375 (1)
Date Sent:Monday, August 31, 2009 3:23 PM
Body:The attached file contains data that was entered into a form. It is not the
The recipient of this data file should save it locally with a unique name.
Adobe Acrobat Professional 7 or later can process this data by importing it
back into the blank form or creating a spreadsheet from several data files.
See Help in Adobe Acrobat Professional 7 or later for more details.
Do we have a way to modify these?
I would need to see this in french also, it could be in the same email but I do need a way to edit this.
Also email sent when tasks are moved in the workflow.
I dont think the email template from the endpoint is not customizable.
What you can do is send the email using the email service as oppose to use the built-in email notification. That way you have full control over you email information.
For the Task email notification, you can define the email template you want. Go on the user step under Custom Email Templates.