(Go) Process New Email by Scanning for Senders

Scan email and save application-selected emails to EML files with unique filenames.

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

    imap := chilkat.NewImap()

    // Connect to an IMAP server.
    // Use TLS
    imap.SetSsl(true)
    imap.SetPort(993)
    success := imap.Connect("imap.someMailServer.com")
    if success != true {
        fmt.Println(imap.LastErrorText())
        imap.DisposeImap()
        return
    }

    // Login
    success = imap.Login("myLogin","myPassword")
    if success != true {
        fmt.Println(imap.LastErrorText())
        imap.DisposeImap()
        return
    }

    // Select an IMAP mailbox
    success = imap.SelectMailbox("Inbox")
    if success != true {
        fmt.Println(imap.LastErrorText())
        imap.DisposeImap()
        return
    }

    // messageSet is a MessageSet
    // We can choose to fetch UIDs or sequence numbers.
    fetchUids := true

    // Fetch messages from the mailbox using a search criteria.
    // This example finds NEW emails: these are emails that have the RECENT flag set, but not the SEEN flag:
    messageSet := imap.Search("NEW",fetchUids)
    if imap.LastMethodSuccess() == false {
        fmt.Println(imap.LastErrorText())
        imap.DisposeImap()
        return
    }

    // This example will download headers, and then download
    // the full email for those emails sent from a contact
    // in our database.

    // When downloading headers, each email object contains
    // (obviously) the headers, but the body will be missing.
    // Also, attachments will not be included.  However, it is
    // possible to get information about the attachments
    // as well as the complete size of the email.
    // bundle is a EmailBundle
    bundle := imap.FetchHeaders(messageSet)
    if imap.LastMethodSuccess() == false {
        messageSet.DisposeMessageSet()
        fmt.Println(imap.LastErrorText())
        imap.DisposeImap()
        return
    }

    // Loop over the email objects...
    i := 0
    numEmails := bundle.MessageCount()
    for i < numEmails {
        email := bundle.GetEmail(i)

        // The sender's email address and name are available
        // in the From, FromAddress, and FromName properties.
        // If the sender is "Chilkat Support <support@chilkatsoft.com",
        // then the From property will hold the entire string.
        // the FromName property contains"Chilkat Support",
        // and the FromAddress property contains "support@chilkatsoft.com"
        fmt.Println(email.From())
        fmt.Println(email.FromAddress())
        fmt.Println(email.FromName())

        // Assume at this point your code checks to see if the sender
        // is one in your contacts database.  If so, this is
        // the code you would write to download the entire
        // email and save it to a file.

        // The ckx-imap-uid header field is added when
        // headers are downloaded.  This makes it possible
        // to get the UID from the email object.
        uidStr := email.GetHeaderField("ckx-imap-uid")
        uid := int(*uidStr)

        // fullEmail is a Email
        fullEmail := imap.FetchSingle(uid,true)
        if imap.LastMethodSuccess() == true {
            // You may use the GenerateFilename method to
            // generate a unique filename...
            var filename *string = new(string)
            filename = fullEmail.GenerateFilename()

            // SaveEml saves the entire email, including attachments.
            success = fullEmail.SaveEml(*filename)
            fullEmail.DisposeEmail()
        }

        fmt.Println("--")
        email.DisposeEmail()

        i = i + 1
    }

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

    messageSet.DisposeMessageSet()
    bundle.DisposeEmailBundle()

    imap.DisposeImap()