In Ruby, what are the best packages for decoding, encoding?

I am trying to encode/decode MIME headers in Ruby.

From stackoverflow

• Ruby has Base64 methods in core, just do

  require "base64"
  

  and use Base64.decode64 and Base64.encode64. For quoted-printable, you could use the following code here.

• If the mime content is related to emails you might also want to check out TMAil...

  http://tmail.rubyforge.org/

  It has a nice approach to parsing out email attachments and multi-part messages and what not.