The following is a known issue for the Email Binding Component:
The Email BC cannot reconcile email account names that contain a space. For example, if the email account john.doe@company.com has an account name of John Doe and the account name is used to populate the From field, the Email BC returns an error when trying to process it.
To work around this issue, make sure the values populating the From and To fields are actual email addresses that contain no spaces.