diff --git a/server/container/cassandra-guice/src/main/java/org/apache/james/jmap/MethodsModule.java b/server/container/cassandra-guice/src/main/java/org/apache/james/jmap/MethodsModule.java
index 4e57d20d42d..01257da6e31 100644
--- a/server/container/cassandra-guice/src/main/java/org/apache/james/jmap/MethodsModule.java
+++ b/server/container/cassandra-guice/src/main/java/org/apache/james/jmap/MethodsModule.java
@@ -19,6 +19,8 @@
 
 package org.apache.james.jmap;
 
+import java.util.List;
+
 import org.apache.james.jmap.json.ObjectMapperFactory;
 import org.apache.james.jmap.methods.GetMailboxesMethod;
 import org.apache.james.jmap.methods.GetMessageListMethod;
@@ -30,10 +32,13 @@
 import org.apache.james.jmap.methods.Method;
 import org.apache.james.jmap.methods.SetMessagesCreationProcessor;
 import org.apache.james.jmap.methods.SetMessagesMethod;
+import org.apache.james.jmap.methods.SetMessagesProcessor;
 import org.apache.james.jmap.methods.SetMessagesUpdateProcessor;
 import org.apache.james.mailbox.cassandra.CassandraId;
 
+import com.google.common.collect.ImmutableList;
 import com.google.inject.AbstractModule;
+import com.google.inject.Provides;
 import com.google.inject.Singleton;
 import com.google.inject.TypeLiteral;
 import com.google.inject.multibindings.Multibinder;
@@ -58,4 +63,12 @@ protected void configure() {
         bind(SetMessagesCreationProcessor.class).to(new TypeLiteral<SetMessagesCreationProcessor<CassandraId>>(){});
     }
 
+    @Provides
+    public List<SetMessagesProcessor<CassandraId>> setMessagesProcessors(
+            SetMessagesUpdateProcessor<CassandraId> messageUpdater,
+            SetMessagesCreationProcessor<CassandraId> messageCreator) {
+
+        return ImmutableList.of( messageUpdater, messageCreator);
+    }
+
 }
diff --git a/server/protocols/jmap/src/main/java/org/apache/james/jmap/methods/SetMessagesMethod.java b/server/protocols/jmap/src/main/java/org/apache/james/jmap/methods/SetMessagesMethod.java
index 52020262bc4..7bb606b40af 100644
--- a/server/protocols/jmap/src/main/java/org/apache/james/jmap/methods/SetMessagesMethod.java
+++ b/server/protocols/jmap/src/main/java/org/apache/james/jmap/methods/SetMessagesMethod.java
@@ -43,6 +43,7 @@
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Preconditions;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -55,18 +56,15 @@ public class SetMessagesMethod<Id extends MailboxId> implements Method {
 
     private final MailboxMapperFactory<Id> mailboxMapperFactory;
     private final MailboxSessionMapperFactory<Id> mailboxSessionMapperFactory;
-    private final SetMessagesUpdateProcessor<Id> messageUpdater;
-    private final SetMessagesCreationProcessor messageCreator;
+    private final List<SetMessagesProcessor<Id>> messagesProcessors;
 
     @Inject
     @VisibleForTesting SetMessagesMethod(MailboxMapperFactory<Id> mailboxMapperFactory,
                                          MailboxSessionMapperFactory<Id> mailboxSessionMapperFactory,
-                                         SetMessagesUpdateProcessor<Id> messageUpdater,
-                                         SetMessagesCreationProcessor messageCreator) {
+                                         List<SetMessagesProcessor<Id>> messagesProcessors) {
         this.mailboxMapperFactory = mailboxMapperFactory;
         this.mailboxSessionMapperFactory = mailboxSessionMapperFactory;
-        this.messageUpdater = messageUpdater;
-        this.messageCreator = messageCreator;
+        this.messagesProcessors = messagesProcessors;
     }
 
     @Override
@@ -99,9 +97,13 @@ public Stream<JmapResponse> process(JmapRequest request, ClientId clientId, Mail
     private SetMessagesResponse setMessagesResponse(SetMessagesRequest request, MailboxSession mailboxSession) throws MailboxException {
         SetMessagesResponse.Builder responseBuilder = SetMessagesResponse.builder();
         processDestroy(request.getDestroy(), mailboxSession, responseBuilder);
-        messageUpdater.process(request, mailboxSession).mergeInto(responseBuilder);
-        messageCreator.process(request, mailboxSession).mergeInto(responseBuilder);
-        return responseBuilder.build();
+        return messagesProcessors.stream()
+                .map(processor -> processor.process(request, mailboxSession))
+                .reduce(responseBuilder,
+                        (builder, resp) -> resp.mergeInto(builder) ,
+                        (builder1, builder2) -> builder2.build().mergeInto(builder1)
+                )
+                .build();
     }
 
     private void processDestroy(List<MessageId> messageIds, MailboxSession mailboxSession, SetMessagesResponse.Builder responseBuilder) throws MailboxException {