Normalize email addresses in email header fields, removing extra spacing and quotation marks and moving comments to the end of the name or address portion.

For example, "' John Smith ' <jsmith@example.com>" would become "John Smith <jsmith@example.com>". 

Comments embedded in an email address would be moved after the email address. Example: "<jsmith(personal)@example.com>" would become "<jsmith@example.com>(personal)".