Hi, Im over the moon because I have just found the answer to your 2nd question.
Go to "Languages"
Select "English"
Select "E-Mail" as your topic and click go.
Look down the list until you find-
eml_mail_header_part1
&
eml_mail_header_part2
Then you can either edit or delete as required.
I hope this helps.......
Mal Dewhurst