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(.NET Core C#) 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.

Chilkat.Imap imap = new Chilkat.Imap();

// Connect to an IMAP server.
// Use TLS
imap.Ssl = true;
imap.Port = 993;
bool success = imap.Connect("imap.someMailServer.com");
if (success != true) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

// Login
success = imap.Login("myLogin","myPassword");
if (success != true) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

// Select an IMAP mailbox
success = imap.SelectMailbox("Inbox");
if (success != true) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

Chilkat.MessageSet messageSet = null;
// We can choose to fetch UIDs or sequence numbers.
bool 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) {
    Debug.WriteLine(imap.LastErrorText);
    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.
Chilkat.EmailBundle bundle = null;
bundle = imap.FetchHeaders(messageSet);
if (imap.LastMethodSuccess == false) {

    Debug.WriteLine(imap.LastErrorText);
    return;
}

// Loop over the email objects...
int i = 0;
int numEmails = bundle.MessageCount;
while (i < numEmails) {
    Chilkat.Email 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"
    Debug.WriteLine(email.From);
    Debug.WriteLine(email.FromAddress);
    Debug.WriteLine(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.
    string uidStr = email.GetHeaderField("ckx-imap-uid");
    int uid = Convert.ToInt32(uidStr);

    Chilkat.Email fullEmail = null;
    fullEmail = imap.FetchSingle(uid,true);
    if (imap.LastMethodSuccess == true) {
        // You may use the GenerateFilename method to
        // generate a unique filename...
        string filename;
        filename = fullEmail.GenerateFilename();

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

    }

    Debug.WriteLine("--");

    i = i + 1;
}

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


 

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