diff --git a/Changelog.rst b/Changelog.rst
index db4eb24..e541358 100644
--- a/Changelog.rst
+++ b/Changelog.rst
@@ -4,6 +4,13 @@ ChangeLog
 
 :website: http://offlineimap.org
 
+
+OfflineIMAP v6.5.6 (YYYY-MM-DD)
+===============================
+
+* Add knob to invoke folderfilter dynamically on each sync (GitHub#73)
+
+
 OfflineIMAP v6.5.5 (2013-10-07)
 ===============================
 
diff --git a/offlineimap.conf b/offlineimap.conf
index 836d075..0a8d44c 100644
--- a/offlineimap.conf
+++ b/offlineimap.conf
@@ -540,6 +540,12 @@ remoteuser = username
 #
 # nametrans = lambda foldername: re.sub('^INBOX\.*', '.', foldername)
 
+# Determines if folderfilter will be invoked on each run
+# (dynamic folder filtering) or filtering status will be determined
+# at startup (default behaviour).
+#
+# dynamic_folderfilter = False
+
 # You can specify which folders to sync using the folderfilter
 # setting. You can provide any python function (e.g. a lambda function)
 # which will be invoked for each foldername. If the filter function
diff --git a/offlineimap/folder/Base.py b/offlineimap/folder/Base.py
index f8b79b4..b26e169 100644
--- a/offlineimap/folder/Base.py
+++ b/offlineimap/folder/Base.py
@@ -33,11 +33,8 @@ class BaseFolder(object):
         :para repository: Repository() in which the folder is.
         """
         self.ui = getglobalui()
-        """Should this folder be included in syncing?"""
-        self._sync_this = repository.should_sync_folder(name)
-        if not self._sync_this:
-            self.ui.debug('', "Filtering out '%s'[%s] due to folderfilter" \
-                          % (name, repository))
+        # Save original name for folderfilter operations
+        self.ffilter_name = name
         # Top level dir name is always ''
         self.name = name if not name == self.getsep() else ''
         self.repository = repository
@@ -47,6 +44,7 @@ class BaseFolder(object):
         # return for the top-level dir.
         if self.visiblename == self.getsep():
             self.visiblename = ''
+
         self.config = repository.getconfig()
         utime_from_message_global = \
           self.config.getdefaultboolean("general",
@@ -56,6 +54,19 @@ class BaseFolder(object):
           self.config.getdefaultboolean(repo,
           "utime_from_message", utime_from_message_global)
 
+        # Determine if we're running static or dynamic folder filtering
+        # and check filtering status
+        self._dynamic_folderfilter = \
+          self.config.getdefaultboolean(repo, "dynamic_folderfilter", False)
+        self._sync_this = repository.should_sync_folder(self.ffilter_name)
+        if self._dynamic_folderfilter:
+            self.ui.debug('', "Running dynamic folder filtering on '%s'[%s]" \
+                          % (self.ffilter_name, repository))
+        elif not self._sync_this:
+            self.ui.debug('', "Filtering out '%s'[%s] due to folderfilter" \
+                          % (self.ffilter_name, repository))
+
+
     def getname(self):
         """Returns name"""
         return self.name
@@ -71,7 +82,10 @@ class BaseFolder(object):
     @property
     def sync_this(self):
         """Should this folder be synced or is it e.g. filtered out?"""
-        return self._sync_this
+        if not self._dynamic_folderfilter:
+            return self._sync_this
+        else:
+            return this.repository.should_sync_folder(self.ffilter_name)
 
     @property
     def utime_from_message(self):