class Mail::Message

def to=( val )

mail.to #=> ['mikel@test.lindsaar.net', 'ada@test.lindsaar.net']
mail.to = 'Mikel , ada@test.lindsaar.net'
mail.to #=> ['mikel@test.lindsaar.net']
mail.to = 'Mikel '

Example:

Sets the To value of the mail object, pass in a string of the field
def to=( val )
  header[:to] = val
end