[horde] pre-select spellcheck language

[A. Schulze]

Hello,

every time I write a message the spellcheck assist me in not writing  
complete non sense.
When *answering* to a message sometime the compose window remember me
"the receiver prefer answers in this language: English"

I would be nice if the default spell checking language is  
automatically changed to English in this case.

Otherwise I often
  - check in german first (waste of time of course)
  - notice my mistake
  - switch spell lang to English
  - check again

Is that possible?

Andreas