diff -ru roundup_orig//roundupdb.py roundup/roundupdb.py
--- roundup_orig//roundupdb.py	2011-06-06 20:29:20.000000000 +0200
+++ roundup/roundupdb.py	2012-01-26 13:39:57.000000000 +0100
@@ -392,7 +392,7 @@
         charset = getattr(self.db.config, 'EMAIL_CHARSET', 'utf-8')
 
         # construct the content and convert to unicode object
-        body = unicode('\n'.join(m), 'utf-8').encode(charset)
+        body = unicode('\n'.join(m), 'utf-8').encode(charset, 'replace')
 
         # make sure the To line is always the same (for testing mostly)
         sendto.sort()