(Swift 3,4,5...) Create Non-Multipart Email with XML Body that is an Attachment

See more SMTP Examples

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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func chilkatTest() {
    // 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>

    var success: Bool = true

    var xmlBody: String? = "<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>"

    let email = CkoEmail()!

    // Add subject, TO, FROM, etc.
    email.subject = "[v=EMCS.NL][a=NL****][k=****][s=0]"
    email.from = "joe@example1.com"
    success = email.add(to: "Mary", emailAddress: "mary@example2.com")

    email.body = xmlBody

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

    // Your email is ready to send
    let mailman = CkoMailMan()!

    mailman.smtpHost = "smtp.my_mail_server.com"
    mailman.smtpUsername = "myUsername"
    mailman.smtpPassword = "myPassword"
    mailman.smtpPort = 465
    mailman.smtpSsl = true
    mailman.startTLS = true

    success = mailman.send(email)
    if success != true {
        print("\(mailman.lastErrorText!)")
        return
    }

    success = mailman.closeSmtpConnection()
    if success != true {
        print("Connection to SMTP server not closed cleanly.")
    }

    print("Mail Sent!")

}