diff --git a/src/pEp.yml2 b/src/pEp.yml2
index d446b3a..b36b6c3 100644
--- a/src/pEp.yml2
+++ b/src/pEp.yml2
@@ -287,11 +287,14 @@ namespace pEp {
 
         enum EncFormat {
             none               > 0
+            pieces             > 1
             inline             > 1
             SMIME              > 2
             PGPMIME            > 3
             PEP                > 4
+            PGP_MIME_Outlook1  > 5
             PEP_enc_inline_EA  > 6
+            PEP_enc_auto       > 255
         }
 
          direction dir;