(Lianja) Create Non-Multipart Email with XML Body that is an Attachment

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Creates an email where the only body is a binary WAV file. The technique used in the example could be applied to other binary files, such as PDF, MS-WORD docs, Excel docs, etc.

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// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// The goal of this example is to create an email that has this MIME format,
// where the body of the email is XML using base64 encoding, 
// and the Content-Type and Content-Disposition are set as indicated.

// Date: Wed, 23 Aug 2023 09:01:52 +0200 (CEST)
// From: joe@example1.com
// Subject: [v=EMCS.NL][a=NL****][k=****][s=0]
// To: mary@example2.com
// MIME-Version: 1.0
// Content-Type: application/octet-stream; charset=us-ascii; name=6bd8dfe259b3a42c90a28a82b5fc6e77.txt
// Content-Transfer-Encoding: Base64
// Content-Disposition: attachment; filename=6bd8dfe259b3a42c90a28a82b5fc6e77.txt
// Message-Id: <......>
// 
// <multi-line base64 encoded XML here>

llSuccess = .T.

lcXmlBody = '<ie:IE801 xmlns:ie="urn:publicid:-:EC:DGTAXUD:EMCS:PHASE4:IE801:V3.01" xmlns:tms="urn:publicid:-:EC:DGTAXUD:EMCS:PHASE4:TMS:V3.01">....</ie:IE801>'

loEmail = createobject("CkEmail")

// Add subject, TO, FROM, etc.
loEmail.Subject = "[v=EMCS.NL][a=NL****][k=****][s=0]"
loEmail.From = "joe@example1.com"
llSuccess = loEmail.AddTo("Mary","mary@example2.com")

loEmail.Body = lcXmlBody

loEmail.AddHeaderField("Content-Transfer-Encoding","Base64")
loEmail.AddHeaderField("Content-Type","application/octet-stream; charset=us-ascii; name=6bd8dfe259b3a42c90a28a82b5fc6e77.txt")
loEmail.AddHeaderField("Content-Disposition","attachment; filename=6bd8dfe259b3a42c90a28a82b5fc6e77.txt")

// Your email is ready to send
loMailman = createobject("CkMailMan")

loMailman.SmtpHost = "smtp.my_mail_server.com"
loMailman.SmtpUsername = "myUsername"
loMailman.SmtpPassword = "myPassword"
loMailman.SmtpPort = 465
loMailman.SmtpSsl = .T.
loMailman.StartTLS = .T.

llSuccess = loMailman.SendEmail(loEmail)
if (llSuccess <> .T.) then
    ? loMailman.LastErrorText
    release loEmail
    release loMailman
    return
endif

llSuccess = loMailman.CloseSmtpConnection()
if (llSuccess <> .T.) then
    ? "Connection to SMTP server not closed cleanly."
endif

? "Mail Sent!"


release loEmail
release loMailman