python3 script to yank down emails from gmail with imap

gistfile1.txt

# modified from this: https://gist.github.com/baali/2633554/
# Same logic, etc, just modified for python3
# Could use argument parser, but really how many times are you going to use this?
#
# Something in lines of http://stackoverflow.com/questions/348630/how-can-i-download-all-emails-with-attachments-from-gmail
# Make sure you have IMAP enabled in your gmail settings.

import getpass
import imaplib
import os

outdir = "/mnt/gmail/" # set to where you want them to go
if not os.path.isdir(outdir):
    os.mkdir(outdir)

userName = input('Enter your GMail username: ')
passwd = getpass.getpass('Enter your password: ')
start_from_where = 0 # this is incase you get interrupted
basename = "all"

try:

    print("gonna login as "+userName)

    imapSession = imaplib.IMAP4_SSL('imap.gmail.com')
    typ, accountDetails = imapSession.login(userName, passwd)
    print("login says : "+typ)
    if typ != 'OK':
        print('Not able to sign in!')
        raise

    imapSession.select("\"[Gmail]/All Mail\"")
    print("selected all mail")
    typ, data = imapSession.search(None, "ALL")
    print("search says : "+typ)
    if typ != 'OK':
        print('Error searching Inbox.')
        raise
    
    for msgId in data[0].split():
        if int(msgId.decode("utf-8")) < start_from_where :
            continue
        typ, messageParts = imapSession.fetch(msgId, '(RFC822)')
        if typ != 'OK':
            print('Error fetching mail.')
            raise
        print("writing "+msgId.decode("utf-8")+" to "+
            outdir+"all."+msgId.decode("utf-8")+".rfc822")
        with open(outdir+basename+"."+msgId.decode("utf-8")+".rfc822",'w') as f:
            f.write(messageParts[0][1].decode("latin_1"))

    imapSession.close()
    imapSession.logout()

except:
    print("ERK i dunno something broke")