(Swift 3,4,5...) Download Unread Email from IMAP Mailbox

Download unread email messages from an IMAP mailbox.

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

func chilkatTest() {
    // 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
    var success: Bool = imap.connect("imap.someMailServer.com")
    if success != true {
        print("\(imap.lastErrorText!)")
        return
    }

    // Login
    success = imap.login("admin@chilkatsoft.com", 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 messageSet: CkoMessageSet?
    var fetchUids: Bool = true

    // Find emails marked as seen or not already seen:
    var seenSearch: String? = "SEEN"
    var notSeenSearch: String? = "NOT SEEN"

    // Get the set of unseen message UIDs
    messageSet = imap.search(notSeenSearch, bUid: fetchUids)
    if imap.lastMethodSuccess == false {
        print("\(imap.lastErrorText!)")
        return
    }

    // Fetch the unseen emails into a bundle object:
    var bundle: CkoEmailBundle?
    bundle = imap.fetchBundle(messageSet)
    if imap.lastMethodSuccess == false {
        messageSet = nil
        print("\(imap.lastErrorText!)")
        return
    }

    // Display the Subject and From of each email.
    var i: Int = 0
    var numEmails: Int = bundle!.messageCount.intValue
    while i < numEmails {
        var email: CkoEmail? = bundle!.getEmail(i)

        print("\(email!.getHeaderField("Date")!)")
        print("\(email!.subject!)")
        print("\(email!.from!)")
        print("--")

        email = nil
        i = i + 1
    }

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

    messageSet = nil
    bundle = nil

}