Greek Character Encoding for Electronic Mail Messages
RFC 1947

Document Type RFC - Informational (May 1996; No errata)
Last updated 2013-03-02
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Network Working Group                                       D. Spinellis
Request for Comments: 1947                                     SENA S.A.
Category: Informational                                         May 1996

         Greek Character Encoding for Electronic Mail Messages

Status of This Memo

   This memo provides information for the Internet community.  This memo
   does not specify an Internet standard of any kind.  Distribution of
   this memo is unlimited.

Overview and Rational

   This document describes a standard encoding for electronic mail
   [RFC822] containing Greek text and provides implementation guide-
   lines.  The standard is based on MIME [RFC1521] and the ISO 8859-7
   character encoding.  Although the implementation of this standard is
   straightforward several non-standard but "functional" - though
   unlikely to inter-operate - alternatives are in common use.  For this
   reason we highlight common implementation and mail user agent setup
   errors.

   Description

   In order to transfer Greek text via electronic mail the text is first
   translated into the ISO 8859-7 character set, and then encoded using
   either the Base64 (preferable for text that is mainly Greek) or the
   Quoted-Printable (justifiable in cases where some Greek words appear
   inside predominately Latin text) method, as defined in MIME.

   The following table provides most common Greek encodings (see also
   [RFC1345]):

   0646 37 M7 51 MC 23 69 LG L1 G7 GO GC 28 97 Description
   ---- -- -- -- -- -- -- -- -- -- -- -- -- -- -----------
   0386 ea a2 86 cd 71 86                   b6 Capital alpha with acute
   0388 eb b8 8d ce 72 8d                   b8 Capital epsilon with
                                               acute
   0389 ec b9 8f d7 73 8f                   b9 Capital eta with acute
   038a ed ba 90 d8 75 90                   ba Capital iota with acute
   038c ee bc 92 d9 76 92                   bc Capital omicron with
                                               acute
   038e ef be 95 da 77 95                   be Capital upsilon with
                                               acute
   038f f0 bf 98 df 78 98                   bf Capital omega with acute
   0390    c0 a1 fd    a1                   c0 Small iota with acute and

Spinellis                    Informational                      [Page 1]
RFC 1947           Greek Encoding for E-mail Messages           May 1996

                                               diaeresis
   0391 80 c1 a4 b0 41 a4 61    41 61 41 41 c1 Capital alpha
   0392 81 c2 a5 b5 42 a5 62    42 62 42 42 c2 Capital beta
   0393 82 c3 a6 a1 43 a6 67 23 43 67 43 44 c3 Capital gamma
   0394 83 c4 a7 a2 44 a7 64 40 44 64 44 45 c4 Capital delta
   0395 84 c5 a8 b6 45 a8 65    45 65 45 46 c5 Capital epsilon
   0396 85 c6 a9 b7 46 a9 7a    46 7a 46 49 c6 Capital zeta
   0397 86 c7 aa b8 47 aa 68    47 68 47 4a c7 Capital eta
   0398 87 c8 ac a3 48 ac 75 5c 48 75 48 4b c8 Capital theta
   0399 88 c9 ad b9 49 ad 69    49 69 49 4c c9 Capital iota
   039a 89 ca b5 ba 51 b5 6b    4b 6b 4a 4d ca Capital kappa
   039b 8a cb b6 a4 52 b6 6c 5e 4c 6c 4b 4e cb Capital lamda
   039c 8b cc b8 bb 53 b7 6d    4d 6d 4c 4f cc Capital mu
   039d 8c cd b7 c1 54 b8 6e    4e 6e 4d 50 cd Capital nu
   039e 8d ce bd a5 55 bd 6a 21 4f 6a 4e 51 ce Capital xi
   039f 8e cf be c3 56 be 6f    50 6f 4f 52 cf Capital omicron
   03a0 8f d0 c6 a6 57 c6 70 3f 51 70 50 53 d0 Capital pi
   03a1 90 d1 c7 c4 58 c7 72    52 72 51 55 d1 Capital rho
   03a3 91 d3 cf aa 59 cf 73 5f 53 73 53 56 d3 Capital sigma
   03a4 92 d4 d0 c6 62 d0 74    54 74 54 58 d4 Capital tau
   03a5 93 d5 d1 cb 63 d1 79    55 79 55 59 d5 Capital upsilon
   03a6 94 d6 d2 bc 64 d2 66 5d 56 66 56 5a d6 Capital phi
   03a7 95 d7 d3 cc 65 d3 78    58 78 57 5b d7 Capital chi
   03a8 96 d8 d4 be 66 d4 63 3a 59 63 58 5c d8 Capital psi
   03a9 97 d9 d5 bf 67 d5 76 5b 5a 76 59 5d d9 Capital omega
   03aa    da    ab    91                   da Capital iota with
                                               diaeresis
   03ab    db    bd    96                   db Capital upsilon with
                                               diaeresis
   03ac e1 dc 9b c0 b1 9b                   dc Small alpha with acute
   03ad e2 dd 9d db b2 9d                   dd Small epsilon with acute
   03ae e3 de 9e dc b3 9e                   de Small eta with acute
   03af e5 df 9f dd b5 9f                   df Small iota with acute
   03b0    e0 fc fe    fc                   e0 Small upsilon with acute
                                               and diaeresis
   03b1 98 e1 d6 e1 8a d6       61 41 61 61 e1 Small alpha
   03b2 99 e2 d7 e2 8b d7       62 42 62 62 e2 Small beta
   03b3 9a e3 d8 e7 8c d8       63 47 63 64 e3 Small gamma
   03b4 9b e4 dd e4 8d dd       64 44 64 65 e4 Small delta
   03b5 9c e5 de e5 8e de       65 45 65 66 e5 Small epsilon
   03b6 9d e6 e0 fa 8f e0       66 5a 66 69 e6 Small zeta
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