Index: roundup/cgi/templating.py
===================================================================
--- roundup/cgi/templating.py	(revision 4205)
+++ roundup/cgi/templating.py	(working copy)
@@ -1035,6 +1035,13 @@
                                 cell[-1] += ' -> %s'%current[k]
                                 current[k] = old
 
+                    # Omit 'non-journaled' properties: as all non-Link
+                    # properties are always journaled, setting 
+                    # do_journal = False means 'omit from history/changes 
+                    # log'
+                    elif hasattr(prop, 'do_journal') and not prop.do_journal:
+                        continue
+
                     elif isinstance(prop, hyperdb.Date) and args[k]:
                         if args[k] is None:
                             d = ''
Index: roundup/roundupdb.py
===================================================================
--- roundup/roundupdb.py	(revision 4205)
+++ roundup/roundupdb.py	(working copy)
@@ -193,7 +193,7 @@
         """
 
     def nosymessage(self, nodeid, msgid, oldvalues, whichnosy='nosy',
-            from_address=None, cc=[], bcc=[]):
+            from_address=None, cc=[], bcc=[], quiet=False, mute=False):
         """Send a message to the members of an issue's nosy list.
 
         The message is sent only to users on the nosy list who are not
@@ -212,6 +212,11 @@
         message to that may not be specified in the message's recipients
         list. These recipients will not be included in the To: or Cc:
         address lists.
+
+        If 'quiet' is true, properties with do_journal=False will be ignored.
+
+        If 'mute' is true, no change note is appended (but changes are still
+        visible in headers).
         """
         if msgid:
             authid = self.db.msg.get(msgid, 'author')
@@ -261,10 +266,11 @@
             if good_recipient(userid):
                 add_recipient(userid, bcc_sendto)
 
-        if oldvalues:
-            note = self.generateChangeNote(nodeid, oldvalues)
-        else:
-            note = self.generateCreateNote(nodeid)
+        if not mute:
+            if oldvalues:
+                note = self.generateChangeNote(nodeid, oldvalues, quiet=quiet)
+            else:
+                note = self.generateCreateNote(nodeid, quiet=quiet)
 
         # If we have new recipients, update the message's recipients
         # and send the mail.
@@ -527,8 +533,12 @@
         return '\n%s\n%s\n<%s>\n%s'%(line, email, web, line)
 
 
-    def generateCreateNote(self, nodeid):
+    def generateCreateNote(self, nodeid, quiet=False):
         """Generate a create note that lists initial property values
+
+        If 'quiet' is true, properties with 'do_journal=False' are ignored.
+        Even if 'quiet' is false, properties that aren't links are ignored
+        if they have a 'do_journal' attribute set to False.
         """
         cn = self.classname
         cl = self.db.classes[cn]
@@ -539,6 +549,8 @@
         prop_items = props.items()
         prop_items.sort()
         for propname, prop in prop_items:
+            if quiet and hasattr(prop, 'do_journal') and not prop.do_journal:
+                continue
             value = cl.get(nodeid, propname, None)
             # skip boring entries
             if not value:
@@ -561,6 +573,11 @@
                 value.sort()
                 value = ', '.join(value)
             else:
+                # Omit 'non-journaled' properties: non-Link properties are
+                # always journaled, so setting .do_journal = False means
+                # 'omit from history/changes log'
+                if hasattr(prop, 'do_journal') and not prop.do_journal:
+                    continue
                 value = str(value)
                 if '\n' in value:
                     value = '\n'+self.indentChangeNoteValue(value)
@@ -569,8 +586,12 @@
         m.insert(0, '')
         return '\n'.join(m)
 
-    def generateChangeNote(self, nodeid, oldvalues):
+    def generateChangeNote(self, nodeid, oldvalues, quiet=False):
         """Generate a change note that lists property changes
+
+        If 'quiet' is true, properties with 'do_journal=False' are ignored.
+        Even if 'quiet' is false, properties that aren't links are ignored
+        if they have a 'do_journal' attribute set to False.
         """
         if not isinstance(oldvalues, type({})):
             raise TypeError("'oldvalues' must be dict-like, not %s."%
@@ -611,6 +632,8 @@
         changed_items.sort()
         for propname, oldvalue in changed_items:
             prop = props[propname]
+            if quiet and hasattr(prop, 'do_journal') and not prop.do_journal:
+                continue
             value = cl.get(nodeid, propname, None)
             if isinstance(prop, hyperdb.Link):
                 link = self.db.classes[prop.classname]
@@ -654,6 +677,11 @@
                     l.sort()
                     change += ' -%s'%(', '.join(l))
             else:
+                # Omit 'non-journaled' properties: non-Link properties are
+                # always journaled, so setting .do_journal = False means
+                # 'omit from history/change log'
+                if hasattr(prop, 'do_journal') and not prop.do_journal:
+                    continue
                 change = '%s -> %s'%(oldvalue, value)
                 if '\n' in change:
                     value = self.indentChangeNoteValue(str(value))