opkg update
opkg install python python-openssl

#!/usr/bin/env python

import datetime, string, shutil, getpass, imaplib, email, os

detach_dir = '/tmp'

M = imaplib.IMAP4_SSL('imap.gmail.com',993)
M.login('USER_NAME', 'USER_PASSWORD')
M.select()
typ, data = M.search(None, '(FROM "SOME_USER@gmail.com" SUBJECT "SOME_SUBJECT" UNSEEN)')
for num in data[0].split():
    typ, data = M.fetch(num, '(RFC822)')
        email_body = data[0][1] # getting the mail content
        mail = email.message_from_string(email_body) # parsing the mail content to get a mail object

        #Check if any attachments at all
        if mail.get_content_maintype() != 'multipart':
            continue

    print datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S") + "   ["+mail["From"]+"] :" + mail["Subject"]
    
        # we use walk to create a generator so we can iterate on the parts and forget about the recursive headache
        for part in mail.walk():
            # multipart are just containers, so we skip them
            if part.get_content_maintype() == 'multipart':
                continue

            # is this part an attachment ?
            if part.get('Content-Disposition') is None:
                continue

            filename = part.get_filename()
            counter = 1

            # if there is no filename, we create one with a counter to avoid duplicates
            if not filename:
                filename = 'part-%03d%s' % (counter, 'bin')
                counter += 1

            att_path = os.path.join(detach_dir, filename)

            #Check if its already there
            if not os.path.isfile(att_path) :
                # finally write the stuff
                fp = open(att_path, 'wb')
                fp.write(part.get_payload(decode=True))
                fp.close()
    
    #Mark the email as read
    #M.store(num, '+FLAGS', '\\Seen')
                    
M.close()
M.logout()