Unable to retrieve mailmessage* ... Please help

Hi,

I am trying to extract mime strings from select messages of a folder.
here is the logic:

// Initialize store.
mailstorage_new()
mailstorage_connect();

// Connect to a known folder on an IMAP server
mailfolder_new(storage, "inbox", NULL);
mailfolder_connect(folder);

// Now, I am searching IMAP server for specific messages
mailimap_search_key* key; // the search criteria. Initialized it appropriately.
mailimap_search(imap_session, "UTF-8", key, &message_ids);

// Now, try retrieving a message by its id.
mailmessage* msg;
mailfolder_get_message(folder, message_ids[0], &msg);  // THIS SUCCEEDS

// BUT WHILE FETCHING MIME OF THE MESSAGE, API FAILS
char* mime;
size_t mime_len;
mailmessage_fetch(msg, &mime, &mime_len);  // THIS RETURNS MAIL_ERROR_FETCH

Please help me if I am doing something wrong here. Please point me to
the right code.

Many thanks!
Suman

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