Python script to export Apples Mail.app rules into gmail filters

rules2filters.py

from plistlib import readPlist
from cgi import escape
from lxml.etree import SubElement as sub
import lxml.etree

# Load in apple mail rules file
rules_file = '~/Library/Mail/V2/MailData/SyncedRules.plist'
rules = readPlist(rules_file)

# Create gmail filters xml header
APPS_NAMESPACE = 'http://schemas.google.com/apps/2006'
NSMAP = {None: 'http://www.w3.org/2005/Atom', 'apps': APPS_NAMESPACE}
feed = lxml.etree.Element('feed', nsmap=NSMAP)
title = sub(feed, 'title').text = 'Mail Filters'

author = sub(feed, 'author')
sub(author, 'name').text = 'Adam Walz'
sub(author, 'email').text = 'adam@adamwalz.net'

# Parse apple mail rules
prop = '{' + APPS_NAMESPACE + "}property"
for rule in rules:
    if rule['Criteria'][0]['Header'] == 'AnyMessage':
        continue

    # All mail rules have the following sub elements
    entry = sub(feed, 'entry')
    sub(entry, 'category', attrib={'term': 'filter'})
    sub(entry, 'title').text = 'Mail Filter'
    sub(entry, 'content')

    logic = ' OR ' if rule['AllCriteriaMustBeSatisfied'] == 'NO' else ''

    # Create rule string
    newcriteria = ''
    for criteria in rule['Criteria']:
        if newcriteria:
            newcriteria = newcriteria + logic

        qual = '+"' if criteria.get('Qualifier') == 'IsEqualTo' else '('
        negation = ' -' if criteria.get('Qualifier') == 'DoesNotContain' \
            else ''
        exp = qual + criteria['Expression']

        header = criteria['Header']

        if header == 'From':
            newcriteria = newcriteria + negation + 'from:' + exp
        elif header == 'To' or header == 'AnyRecipient':
            newcriteria = newcriteria + negation + 'deliveredto:' + exp
        elif header == 'Subject':
            newcriteria = newcriteria + negation + 'subject:' + exp
        elif header == 'Body':
            newcriteria = newcriteria + negation + exp

        if criteria.get('Qualifier') == 'IsEqualTo':
            newcriteria = newcriteria + '"'
        else:
            newcriteria = newcriteria + ')'

    newcriteria = escape(newcriteria)

    # Create label
    label = []
    for part in rule.get('CopyToMailbox', '').split('/'):
        if part.endswith('.mbox'):
            label.append(part.rstrip('.mbox').lower())

    # sub elements unique to rule
    sub(entry, prop, attrib={'name': 'hasTheWord', 'value': newcriteria})
    sub(entry, prop, attrib={'name': 'label', 'value': '/'.join(label)})

# Print gmail filters
# print(lxml.etree.tostring(feed,
#       xml_declaration=True,
#       encoding="utf-8",
#       pretty_print=True))
print(lxml.etree.tounicode(feed))

Hello! I'm a full-on noob in this domain, but your code answered my query exactly - i just don't know how to use it, whether it's safe to use and/or has been tested or not. I'm using a MacBook Pro 13.3", running a gmail account (+1 other) through apple mail and want my (apple)mail rules to be exported to my gmail account filters, so that my iPhone mail app has those rules already applied. I think that as I have created rules on my MacBook but am not using an iCloud email address the MacBook rules aren't working on my iPhone, but my original gmail filters are. Any help much appreciated. J

Following… how can we lunch/use your code?
thanks in advance.
cheers