title: Sending multilingual email. Which charset should I suse?
body: <p>I want to send emails in a number of languages (en/es/fr/de/ru/pl). I notice that Gmail uses KOI8-R charset when sending emails contatining Cyrillic characters.</p>
  
  <p>Can I just use KOI8-R for ALL my emails, or is there any reason to select a particular charset for each language?</p>