Message format - Githubissues

I'm working on an IMAP wrapper that I'd like to integrate with Postal later on, but there are a few incompatibilities or inconsistencies.

For a multipart message, you suggest

{:from "me@draines.com"
 :to "foo@example.com"
 :subject "Hi!"
 :body [{:type "text/html"
     :content "<b>Test!</b>"}
     ;;;; supports both dispositions:
     {:type :attachment
     :content (java.io.File. "/tmp/foo.txt")}
     {:type :inline
     :content (java.io.File. "/tmp/foo.txt")}]}

This is almost equal to what I produce, except that you use both :content and :body, and :type for both :content-type and :content-disposition, why? Are they interchangeable, or is there a difference?

An example message of mine, which is a rather straightforward conversion:

{:subject "anther test",
 :from "Pepijn de Vos <pepijndevos@gmail.com>",
 :date "Thu, 17 Nov 2011 17:28:50 +0100",
 :to "postmaster@wishfulcoding.mailgun.org",
 :content
 ({:content "Hi\r\n\r\n",
   :content-type "text/plain; charset=\"us-ascii\"",
   :mime-version "1.0",
   :content-transfer-encoding "7bit"}
  {:content
   ({:content
     "<html><head></head><body style=\"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; \">Hi<div><br></div><div><img height=\"240\" width=\"240\" apple-width=\"yes\" apple-height=\"yes\" id=\"e5e7beb3-323d-4657-8018-bac9bf8fdfc2\" src=\"cid:02374C7B-D4AB-4D39-A892-8FC5B025A9EF@lan\"><img height=\"240\" width=\"240\" apple-width=\"yes\" apple-height=\"yes\" id=\"c87d9bc1-42ac-4c78-b8b8-efb050267160\" src=\"cid:E986AD1E-5A70-4301-89D1-0AB4BD62181E@lan\"></div></body></html>",
     :content-type "text/html; charset=\"us-ascii\"",
     :mime-version "1.0",
     :content-transfer-encoding "7bit"}
    {:content
     #<BufferedImage BufferedImage@64900079: type = 6 ColorModel: #pixelBits = 32 numComponents = 4 color space = java.awt.color.ICC_ColorSpace@2a0f3b83 transparency = 3 has alpha = true isAlphaPre = false ByteInterleavedRaster: width = 240 height = 240 #numDataElements 4 dataOff[0] = 3>,
     :content-type "image/png; name=\"illusion.png\"",
     :mime-version "1.0",
     :content-id "<02374C7B-D4AB-4D39-A892-8FC5B025A9EF@lan>",
     :content-disposition "inline; filename=\"illusion.png\"",
     :content-transfer-encoding "base64"}
    {:content
     #<BufferedImage BufferedImage@4e0c2b07: type = 6 ColorModel: #pixelBits = 32 numComponents = 4 color space = java.awt.color.ICC_ColorSpace@2a0f3b83 transparency = 3 has alpha = true isAlphaPre = false ByteInterleavedRaster: width = 240 height = 240 #numDataElements 4 dataOff[0] = 3>,
     :content-type "image/png; name=\"square.png\"",
     :mime-version "1.0",
     :content-id "<E986AD1E-5A70-4301-89D1-0AB4BD62181E@lan>",
     :content-disposition "inline; filename=\"square.png\"",
     :content-transfer-encoding "base64"}),
   :content-type
   "multipart/related;\r\n boundary=\"===============7617467129600379649==\"",
   :mime-version "1.0"}),
 :received
 "from ubuntu.lan (ip4da451b5.direct-adsl.nl. [77.164.81.181]) by\r\n mx.google.com with ESMTPS id f41sm91056321eec.5.2011.11.17.08.28.50\r\n (version=TLSv1/SSLv3 cipher=OTHER); Thu, 17 Nov 2011 08:28:53 -0800 (PST)",
 :content-type
 "multipart/alternative;\r\n boundary=\"===============4025336257788734124==\"",
 :mime-version "1.0",
 :dkim-signature
 "v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma;\r\n h=from:content-type:subject:date:message-id:to:mime-version:x-mailer;\r\n bh=aHrYvWBg8oYhUws6PWTTAvMs9wUsBG0OfADodtVoP40=;\r\n b=TH+x17rro680gVsA0e5numk5JiOJPnaYCNafeN4ubkJCG3r5y4Ttk2xw+cN35wqaop\r\n zeqO1RcRfVWXozquGNIWa6Xo7E/JPSvH62jnionnrnZU7qN2Vyr0SIFwZWcCFMR5Wxkd\r\n 0JqJLT4hbQ+W1HM+W5AGTGntYNDw7OfDG7emI=",
 :message-id "<D58523A8-9C2B-4698-BCB7-71E845E80472@gmail.com>",
 :x-mailer "Apple Mail (2.1251.1)"}

drewr / postal

Message format #13