diff --git a/ChangeLog b/ChangeLog
index e8437d9d4..1ef9cac00 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2011-07-08  Wolfgang Sourdeau  <wsourdeau@inverse.ca>
+
+	* SoObjects/Mailer/SOGoMailFolder.m
+	(_fetchMessageProperties:matchingQualifier:andSortOrderings::):
+	properly implement this method, as properties should be an array
+	instead of a dictionary.
+	(-mostRecentMessageDate): new method that returns the date of the
+	last available message.
+
 2011-07-07  Francis Lachapelle  <flachapelle@inverse.ca>
 
 	* UI/WebServerResources/UIxListEditor.js (endEditable): when a
diff --git a/SoObjects/Mailer/SOGoMailFolder.h b/SoObjects/Mailer/SOGoMailFolder.h
index 53a7c0183..f0cc8c553 100644
--- a/SoObjects/Mailer/SOGoMailFolder.h
+++ b/SoObjects/Mailer/SOGoMailFolder.h
@@ -80,6 +80,8 @@
 
 - (NSException *) expunge;
 
+- (NSCalendarDate *) mostRecentMessageDate;
+
 /* flags */
 
 - (NSException *) addFlagsToAllMessages: (id) _f;
diff --git a/SoObjects/Mailer/SOGoMailFolder.m b/SoObjects/Mailer/SOGoMailFolder.m
index 71a2ef435..e393bd9ac 100644
--- a/SoObjects/Mailer/SOGoMailFolder.m
+++ b/SoObjects/Mailer/SOGoMailFolder.m
@@ -1330,13 +1330,13 @@ static NSString *defaultUserID =  @"anyone";
   return sortOrderings;
 }
 
-- (NSArray *) _fetchMessageProperties: (NSDictionary *) properties
+- (NSArray *) _fetchMessageProperties: (NSArray *) properties
                     matchingQualifier: (EOQualifier *) searchQualifier
                      andSortOrderings: (NSArray *) sortOrderings
 {
   NGImap4Client *client;
   NSDictionary *response;
-  NSArray *messages;
+  NSArray *messages, *values = nil;
   NSString *resultKey;
 
   client = [[self imap4Connection] client];
@@ -1355,11 +1355,16 @@ static NSString *defaultUserID =  @"anyone";
     }
 
    if ([[response objectForKey: @"result"] boolValue])
-     messages = [response objectForKey: resultKey];
-   else
-     messages = nil;
+     {
+       messages = [response objectForKey: resultKey];
+       if ([messages count] > 0)
+         {
+           response = [client fetchUids: messages parts: properties];
+           values = [response objectForKey: @"fetch"];
+         }
+     }
 
-  return messages;
+  return values;
 }
 
 - (NSArray *) _davPropstatsWithProperties: (NSArray *) davProperties
@@ -1524,7 +1529,7 @@ static NSString *defaultUserID =  @"anyone";
                                          inNamespace: XMLNS_INVERSEDAV];
   sortOrderings = [self _sortOrderingsFromSortElement: sortElement];
 
-  messages = [self _fetchMessageProperties: properties
+  messages = [self _fetchMessageProperties: [properties allKeys]
                          matchingQualifier: searchQualifier
                           andSortOrderings: sortOrderings];
   [self _appendProperties: [properties allKeys]
@@ -1603,6 +1608,20 @@ static NSString *defaultUserID =  @"anyone";
   return response;
 }
 
+- (NSCalendarDate *) mostRecentMessageDate
+{
+  NSArray *values;
+  NSCalendarDate *date = nil;
+
+  values = [self _fetchMessageProperties: [NSArray arrayWithObject: @"ENVELOPE"]
+                       matchingQualifier: nil
+                        andSortOrderings: [NSArray arrayWithObject: @"REVERSE DATE"]];
+  if ([values count] > 0)
+    date = [[[values objectAtIndex: 0] objectForKey: @"envelope"] date];
+
+  return date;
+}
+
 @end /* SOGoMailFolder */
 
 @implementation SOGoSpecialMailFolder