diff --git a/labeler.py b/labeler.py
new file mode 100644
index 0000000..c93d967
--- /dev/null
+++ b/labeler.py
@@ -0,0 +1,96 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import logging
+from logging.handlers import SysLogHandler
+from logging.handlers import RotatingFileHandler
+import sys
+import pprint
+import re
+import os
+import io
+import email
+from email.message import EmailMessage
+from email.parser import HeaderParser
+from subprocess import Popen, PIPE
+
+messagecontent="".join(sys.stdin.readlines())
+log = logging.getLogger()
+log.addHandler(SysLogHandler())
+handler = RotatingFileHandler('/var/spool/filter/labeler.log', maxBytes=1000000, backupCount=5)
+formatter = logging.Formatter('%(asctime)s %(name)-12s %(levelname)-8s %(message)s')
+handler.setFormatter(formatter)
+log.addHandler(handler)
+# handler = logging.StreamHandler()
+# formatter = logging.Formatter(
+#        '%(asctime)s %(name)-12s %(levelname)-8s %(message)s')
+# handler.setFormatter(formatter)
+# log.addHandler(handler)
+log.setLevel(logging.DEBUG)
+log.info('Writing {} bytes of message in /var/spool/filter/last_message.eml...'.format(len(messagecontent)))
+if not os.path.exists('/var/spool/filter'):
+    log.error('Path /var/spool/filter not found.')
+else:
+    with io.open('/var/spool/filter/last_message.eml', 'w') as fp:
+        try:
+            fp.write(messagecontent)
+        except UnicodeEncodeError as e:
+            log.error('There was an Unicode encode error writting file. {}'.format(e))
+
+    parser = HeaderParser()
+    log.debug('Obtaining headers from message...')
+    msg = email.message_from_string(messagecontent)
+    headers = parser.parsestr(messagecontent)
+
+    log.debug('Headers: {}'.format(", ".join(headers.keys())))
+    log.debug('From: {}'.format(headers.get('From','')))
+    log.debug('To: {}'.format(headers.get('To','')))
+    log.debug('Subject: {}'.format(headers.get('Subject','')))
+    if 'Message-ID' not in headers.keys():
+        if 'Message-Id' not in headers.keys():
+            log.warning('Malformed header (no message-id).')
+        else:
+            log.debug('Processing message with ID: {}'.format(headers['Message-Id']))
+    else:
+        log.debug('Processing message with ID: {}'.format(headers['Message-ID']))
+    with open('/etc/postfix/filter_rules.conf','r') as fp:
+        strrules = fp.read()
+
+    log.debug('Reading general filter rules...')
+    rules = list()
+    for rule in strrules.split('\n'):
+        if rule != "":
+            lrule = rule.split(':')
+            field = lrule[0]
+            match = lrule[1]
+            folder = lrule[2]
+            priority = lrule[4]
+            rules.append(lrule)
+            # log.debug('Checking rule: {}'.format(rule))
+            if field in headers.keys():
+                m = re.search(match, headers[field])
+                if m is None:
+                    # log.debug('Header "{}" with value "{}" does NOT match "{}"'.format(lrule[0], headers[lrule[0]], lrule[1]))
+                    a = 1
+                else:
+                    msg['X-AD-Label'] = "{}:{}".format(folder, priority)
+                    log.info('Added label "{}" due to rule "{}"'.format(folder, rule))
+            # else:
+                # log.debug('Message does NOT have a header called "{}".'.format(lrule[0]))
+    messagecontent=msg.as_string()
+    if not os.path.exists('/var/spool/filter'):
+        log.error('Path /var/spool/filter not found.')
+    else:
+        log.info('Writing {} bytes of message in /var/spool/filter/last_message_altered.eml...'.format(len(messagecontent)))
+        with open('/var/spool/filter/last_message_altered.eml', 'w', encoding='utf8') as fp:
+            fp.write(messagecontent)
+
+args = list()
+args = ["/usr/sbin/sendmail"] + sys.argv
+args.pop(1)
+log.debug('Running sendmail with command line: {}'.format(' '.join(args)))
+if not os.path.exists("/usr/sbin/sendmail"):
+    log.error('Not found sendmail in "/usr/sbin/sendmail"')
+else:
+    p = Popen(args, stdin=PIPE)
+    p.communicate(bytearray(messagecontent, 'utf-8'))
\ No newline at end of file