Archive IMAP E-Mail to local computer

archive-imap-email.py

#!/usr/bin/env python
#
# Based on https://gist.github.com/robulouski/7442321
# Extended using code from https://ubuntuforums.org/showthread.php?t=993184
#
# A Python script to dump all emails from each IMAP folder in an account 
# to files.  
#
# Mail from each IMAP folder is outputted into a sub-folder of the same name.
#
# NOTE: running this script will replace any existing files of the same name
# in the subfolders. Use at your own risk.
#
# This code is released into the public domain.
#
# RKI Nov 2013, extended by GP 2016
#
import sys, os
import imaplib
import getpass

# Input your IMAP account settings here:
IMAP_SERVER = 'imap.server.com'
EMAIL_ACCOUNT = "my.name@server.com"
OUTPUT_DIRECTORY = '/Users/myname/email-output'

# Don't change anything below here

PASSWORD = getpass.getpass()

def process_mailbox(M,finaloutput):
    """
    Dump all emails in the folder to files in output directory.
    """

    rv, data = M.search(None, "ALL")
    if rv != 'OK':
        print "No messages found!"
        return

    for num in data[0].split():
        rv, data = M.fetch(num, '(RFC822)')
        if rv != 'OK':
            print "ERROR getting message", num
            return
        print "Writing message ", num
        directory = '%s/%s' %(OUTPUT_DIRECTORY, finaloutput)
        if not os.path.exists(directory):
            os.makedirs(directory)
        f = open('%s/%s/%s.eml' %(OUTPUT_DIRECTORY, finaloutput, num), 'wb')
        f.write(data[0][1])
        f.close()

def main():
    M = imaplib.IMAP4_SSL(IMAP_SERVER)
    M.login(EMAIL_ACCOUNT, PASSWORD)
    boxes = M.list()
    for box in boxes[1]:
        if '"." ' in box:
            dross, folder = box.split('"." ',1)
            output = folder.replace(" ", "_")
            finaloutput = output.replace("\"", "")
            rv, data = M.select(finaloutput)
            if rv == 'OK':
                print "Processing mailbox: ", finaloutput
                process_mailbox(M,finaloutput)
                M.close()
        else:
            print "ERROR: Unable to open mailbox ", rv
    M.logout()

if __name__ == "__main__":
    main()