Change the default charset for sent email

[joseant]

Hello,

i need change the default charset for sent email (utf-8 to iso-8859-1)

i search and find this:

http://roundcubeforum.net/forum/index.php?topic=1646.msg6661#msg6661

it is a good solution, but now I need that the predetermined selection is iso-8859-1 and not utf-8

i need this to solve a character issue with hotmail and spanish language (ñ, á, é, ...)

thanks!!