(Swift 3,4,5...) IMAP Download All Email One at a Time

Demonstrates how to download every email in an IMAP mailbox one at a time as a MIME string or as an email object. (The MIME contains the full contents of the email including all attachments.)

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

func chilkatTest() {
    let imap = CkoImap()!

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

    // Connect to an IMAP server.
    // Use TLS
    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
    }

    // Once the mailbox is selected, the NumMessages property
    // will contain the number of messages in the mailbox.
    // You may loop from 1 to NumMessages to
    // fetch each message by sequence number.

    var bUid: Bool = false
    var mimeStr: String?
    var i: Int
    var n: Int = imap.numMessages.intValue
    for i = 1; i <= n; i++ {

        // Download the email by sequence number.
        mimeStr = imap.fetchSingle(asMime: i, bUid: bUid)

        // ... your application may process each MIME string...
    }

    // An alternative is to download each email in the form of an
    // email object, like this:
    var email: CkoEmail?
    for i = 1; i <= n; i++ {

        // Download the email by sequence number.
        email = imap.fetchSingle(i, bUid: bUid)

        // ... your application may process the email object...

        email = nil
    }

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

}