diff --git a/imap_filter/imap_filter.py b/imap_filter/imap_filter.py
index bb176b6..c123663 100644
--- a/imap_filter/imap_filter.py
+++ b/imap_filter/imap_filter.py
@@ -74,7 +74,7 @@ class ImapFilter:
                 mailbox['mailbox']
             )
             msg_count = 0
-            mailbox_matches = 0
+            self.mailbox_matches = 0
             for message_id in all_msgs_uids:
                 msg_count += 1
                 self._log.debug(
@@ -100,16 +100,16 @@ class ImapFilter:
                         "Error fetching message. %s",
                         error
                     )
-            if mailbox_matches > 0:
+            if self.mailbox_matches > 0:
                 self._log.info(
                     "A total of %s matches for this mailbox,",
-                    mailbox_matches
+                    self.mailbox_matches
                 )
             else:
                 self._log.info(
                     "No matches for this mailbox"
                 )
-            matches += mailbox_matches
+            matches += self.mailbox_matches
         self._log.info(
             "A total of %s matches for all mailboxes.",
             matches
@@ -158,7 +158,7 @@ class ImapFilter:
                 field_data,
                 mfilter['name']
             )
-            mailbox_matches += 1
+            self.mailbox_matches += 1
             if self.config['dummy']:
                 self._log.info('Doing nothing (dummy run)')
             else: