Your Internet Consultant - The FAQs of Life Online
MIME makes e-mail more powerful by adding the ability to exchange messages in languages with different character sets and with character sets other than ASCII. MIME mail can also include pictures, sounds, PostScript images, file pointers to FTP sites, and other good stuff.
MIME isn't a program; it's a specification. Many of today's e-mail programs understand the MIME specification, but remember that not everyone has access to programs that understand MIME. If you aren't sure whether your message's recipients can read MIME messages, stick with plain old text, the lowest common denominator of electronic mail.
Discussions about MIME take place on the Usenet's comp.mail.mime newsgroup. There is also a mailing list gatewayed with comp.mail.mime. If you are unable to read Usenet news, send a subscription request to info-mime-request@thumper.bellcore.com.
If you're in the United Kingdom, you can receive info-mine by sending a request to info-mime-uk-request@mailbase.ac.uk.
An overview of the MIME specification is available by FTP from ftp.netcom.com:pub/mdg/mime.txt for the text version or ftp.netcom.com:pub/mdg/mime.ps for the PostScript version
For more information, read the comp.mail.mime frequently asked questions list on Usenet at comp.mail.mime or available by FTP from rtfm.mit.edu:/pub/usenet/comp.mail.mime/c.m.m_f_a_q_l_(F)_(1_3).