diff -r 4e54af54a4a1 -r 6c59112cfd31 emailservices/nmclientapi/src/nmapitypesconverter.cpp
--- a/emailservices/nmclientapi/src/nmapitypesconverter.cpp	Wed Sep 15 17:47:19 2010 +0300
+++ b/emailservices/nmclientapi/src/nmapitypesconverter.cpp	Thu Sep 30 11:43:07 2010 +0300
@@ -79,7 +79,8 @@
     api_env.setSender(envelope.sender().address());
     api_env.setSentTime(envelope.sentTime());
     api_env.setSubject(envelope.subject());
-    api_env.setMailboxId(envelope.messageId().id());
+    NmId mailboxId(envelope.mailboxId());
+    api_env.setMailboxId(mailboxId.id());
     api_env.setFlags(static_cast<EmailClientApi::NmApiMessageFlags>(static_cast<int>(envelope.flags())), true);
 
     return api_env;