Swift

Async Upload (Append) Email to an IMAP Mailbox

Use the AppendMailAsync method call to append an email to an IMAP mailbox. Swift

func chilkatTest() {
    var success: Bool = false

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

    let imap = CkoImap()!

    // Connect to an IMAP server.
    // Use TLS
    imap.ssl = true
    imap.port = 993
    success = imap.connect(hostname: "MY-IMAP-DOMAIN")
    if success != true {
        print("\(imap.lastErrorText!)")
        return
    }

    // Login
    success = imap.login(login: "MY-IMAP-LOGIN", password: "MY-IMAP-PASSWORD")
    if success != true {
        print("\(imap.lastErrorText!)")
        return
    }

    // Create a simple email with 2 recipients.
    let email = CkoEmail()!
    email.from = "support@chilkatsoft.com"
    email.add(to: "Chilkat Sales", emailAddress: "sales@chilkatsoft.com")
    email.add(to: "Chilkat GMail", emailAddress: "chilkat.support@gmail.com")
    email.body = "This is a test email."
    email.subject = "This is a test email."

    // Imagine we've sent this email via SMTP, and now we want to 
    // save the email to our "Sent" mailbox.  On GMail, the mailbox name
    // for sent email is "[Gmail]/Sent Mail".

    // Call the async version of the AppendMail method to return a task object.
    var task: CkoTask? = imap.appendMailAsync(mailbox: "[Gmail]/Sent Mail", email: email)
    if imap.lastMethodSuccess != true {
        print("\(imap.lastErrorText!)")
        return
    }

    // Schedule the task for running on the thread pool.  This changes the task's state
    // from Inert to Live.  The task is now running...
    success = task!.run()
    if success != true {
        print("\(task!.lastErrorText!)")
        task = nil
        return
    }

    // -------------------------------------------------------------------------------
    // The following is a general note that applies to all programming languages:
    // -------------------------------------------------------------------------------
    // Your application can keep a reference to the task object and periodically check back later to see if it's finished.
    // If your programming language is one that supports callbacks, then the TaskCompleted callback can
    // be setup to be called when the task completes.  (See the "Async" category on example-code.com for more information.)
    // 
    // NOTE: This is very important:  A TaskCompleted callback runs in the background thread.  
    // (All callbacks from an async task, such as AbortCheck, PercentDone, ProgressInfo, etc. are in the background thread.) 
    // An application that uses TaskCompleted must be very careful.  
    // For example, user interface elements (such as labels, text boxes, etc.) may not be directly
    // accessible from a background thread, and could crash the application if directly accessed.  Also, attempting to debug
    // code running in a background thread from an IDE, especially an older IDE (such as VB6) is likely to crash the IDE.

}