RFC 1521

57%
Section Title Implemented Tests Comments
3 MIME-Version 0.2 0.2
4 Content-Type 0.2 0.2
5 Content-Transfer-Encoding 0.2 0.2
5.1 quoted-printable 0.3 0.3 Content-Transfer-Encoding type
5.2 base64 0.5 0.5 Content-Transfer-Encoding type
6.1 Content-ID No No
6.2 Content-Description No No
7.1 Text Content-Type 0.2 0.2
7.1.1 charset parameter 0.9 0.9
7.2 Multipart Content-Type 0.3 0.3
7.2.1 Multipart Syntax 0.3 0.3
7.2.2 multipart/mixed 0.3 0.3
7.2.3 multipart/alternative 0.9 0.9
7.2.4 multipart/digest No No Collection of email documents.
7.2.5 multipart/parallel 0.9 0.9 Only renders the first item.
7.3 Message Content-Type No No
7.3.1 message/rfc822 No No
7.3.2 message/partial No No
7.3.3 message/external-body No No
7.4 Application Content-Type N/A N/A Non-text data not supported.
7.5 Image Content-Type N/A N/A Non-text data not supported.
7.6 Audio Content-Type N/A N/A Non-text data not supported.
7.7 Video Content-Type N/A N/A Non-text data not supported.

References

  1. N. Borenstein, N. Freed, Mechanisms for Specifying and Describing the Format of Internet Message Bodies. RFC Editor 1993.