(Swift 3,4,5...) Forward an Email using CreateForward

Reads an email from an IMAP server, creates a forward version of the email using the CreateForward method, and sends the email to another recipient.

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

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

    // Read the 1st (most recent) email in an Inbox.
    let imap = CkoImap()!

    // Connect to an IMAP server.
    imap.ssl = true
    imap.port = 993
    var success: Bool = imap.connect("imap.someMailServer.com")
    if success != true {
        print("\(imap.lastErrorText!)")
        return
    }

    // Login
    success = imap.login("myLogin", password: "myPassword")
    if success != true {
        print("\(imap.lastErrorText!)")
        return
    }

    // Select an IMAP mailbox
    success = imap.selectMailbox("Inbox")
    if success != true {
        print("\(imap.lastErrorText!)")
        return
    }

    var numEmails: Int = imap.numMessages.intValue

    // Fetch the email at the last sequence number.
    // (We are assuming the Inbox has at least 1 email)
    var email: CkoEmail? = imap.fetchSingle(numEmails, bUid: false)
    if imap.lastMethodSuccess == false {
        print("\(imap.lastErrorText!)")
        return
    }

    // Disconnect from the IMAP server.
    imap.disconnect()

    print("\(email!.subject!)")

    var eForward: CkoEmail? = email!.createForward()

    // The eForward email has no To or CC recipients yet.
    // Add one or more..
    eForward!.add(to: "Chilkat Support", emailAddress: "support@chilkatsoft.com")

    // We also need to specify the From name/address.
    eForward.fromAddress = "matt@someMailServer.com"
    eForward.fromName = "Matt"

    // If we wish to add text at the start of the email body:
    let sbHtmlBody = CkoStringBuilder()!
    if eForward!.hasHtmlBody() == true {
        sbHtmlBody.append(eForward!.getHtmlBody())
        sbHtmlBody.prepend("<p>Hello, this is an email I'm forwarding to you...</p>")
        eForward!.setHtmlBody(sbHtmlBody.getAsString())
    }

    let sbPtBody = CkoStringBuilder()!
    if eForward!.hasPlainTextBody() == true {
        sbPtBody.append(eForward!.getPlainTextBody())
        sbPtBody.prepend("Hello, this is an email I'm forwarding to you...\r\n\r\n")
        eForward!.setTextBody(sbPtBody.getAsString(), contentType: "text/plain")
    }

    // We could save the .eml, then double-click on it to view in our mail program, such as Outlook or Thunderbird..
    eForward!.saveEml("qa_output/forward.eml")

    // We could send (forward) the email..
    let mailman = CkoMailMan()!

    mailman.smtpHost = "smtp.someMailServer.com"
    mailman.smtpUsername = "myLogin"
    mailman.smtpPassword = "myPassword"
    mailman.smtpPort = 587
    mailman.startTLS = true

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

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

    print("Mail Sent!")

    eForward = nil
    email = nil

}