IMailFolderGetStreamAsync(UniqueId, BodyPart, CancellationToken, ITransferProgress) Method

Task<Stream> GetStreamAsync(
	UniqueId uid,
	BodyPart part,
	CancellationToken cancellationToken = default,
	ITransferProgress progress = null
)

public static void CacheBodyParts (string baseDirectory)
{
    using (var client = new ImapClient ()) {
        client.Connect ("imap.gmail.com", 993, SecureSocketOptions.SslOnConnect);

        client.Authenticate ("username", "password");

        client.Inbox.Open (FolderAccess.ReadOnly);

        // search for messages where the Subject header contains either "MimeKit" or "MailKit"
        var query = SearchQuery.SubjectContains ("MimeKit").Or (SearchQuery.SubjectContains ("MailKit"));
        var uids = client.Inbox.Search (query);

        // fetch summary information for the search results (we will want the UID and the BODYSTRUCTURE
        // of each message so that we can extract the text body and the attachments)
        var items = client.Inbox.Fetch (uids, MessageSummaryItems.UniqueId | MessageSummaryItems.BodyStructure);

        foreach (var item in items) {
            // determine a directory to save stuff in
            var directory = Path.Combine (baseDirectory, item.UniqueId.ToString ());

            // create the directory
            Directory.CreateDirectory (directory);

            // now iterate over all of the body parts and save them to disk
            foreach (var bodyPart in item.BodyParts) {
                // cache the raw body part MIME just like we did with the body
                using (var stream = client.Inbox.GetStream (item.UniqueId, bodyPart)) {
                    var path = Path.Combine (directory, bodyPart.PartSpecifier);

                    using (var output = File.Create (path))
                        stream.CopyTo (output);
                }
            }
        }

        client.Disconnect (true);
    }
}