diff --git a/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/CassandraMailboxSessionMapperFactory.java b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/CassandraMailboxSessionMapperFactory.java
index 6c8e39c5b3c..17abbdab444 100644
--- a/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/CassandraMailboxSessionMapperFactory.java
+++ b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/CassandraMailboxSessionMapperFactory.java
@@ -132,7 +132,8 @@ public CassandraMailboxSessionMapperFactory(UidProvider uidProvider, ModSeqProvi
             deletedMessageDAO);
         this.cassandraMailboxMapper = new CassandraMailboxMapper(mailboxDAO, mailboxPathV3DAO, userMailboxRightsDAO, aclMapper, cassandraConfiguration);
         this.cassandraSubscriptionMapper = new CassandraSubscriptionMapper(session);
-        this.cassandraAttachmentMapper = new CassandraAttachmentMapper(attachmentDAOV2, blobStore, new StringBackedAttachmentIdFactory());
+        this.cassandraAttachmentMapper = new CassandraAttachmentMapper(attachmentDAOV2, blobStore,
+            new CassandraAttachmentMapper.AttachmentIdAssignationStrategy.Default(new StringBackedAttachmentIdFactory()));
         this.cassandraMessageMapper = new CassandraMessageMapper(
             uidProvider,
             modSeqProvider,
diff --git a/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraAttachmentMapper.java b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraAttachmentMapper.java
index 4fef446aecb..a6542ce3a1d 100644
--- a/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraAttachmentMapper.java
+++ b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraAttachmentMapper.java
@@ -54,15 +54,33 @@
 public class CassandraAttachmentMapper implements AttachmentMapper {
     private static final Logger LOGGER = LoggerFactory.getLogger(CassandraAttachmentMapper.class);
 
+    public interface AttachmentIdAssignationStrategy {
+        AttachmentId assign(ParsedAttachment parsedAttachment, MessageId messageId);
+
+        class Default implements AttachmentIdAssignationStrategy {
+            private final AttachmentIdFactory attachmentIdFactory;
+
+            @Inject
+            public Default(AttachmentIdFactory attachmentIdFactory) {
+                this.attachmentIdFactory = attachmentIdFactory;
+            }
+
+            @Override
+            public AttachmentId assign(ParsedAttachment parsedAttachment, MessageId messageId) {
+                return attachmentIdFactory.random();
+            }
+        }
+    }
+
     private final CassandraAttachmentDAOV2 attachmentDAOV2;
     private final BlobStore blobStore;
-    private final AttachmentIdFactory attachmentIdFactory;
+    private final AttachmentIdAssignationStrategy attachmentIdAssignationStrategy;
 
     @Inject
-    public CassandraAttachmentMapper(CassandraAttachmentDAOV2 attachmentDAOV2, BlobStore blobStore, AttachmentIdFactory attachmentIdFactory) {
+    public CassandraAttachmentMapper(CassandraAttachmentDAOV2 attachmentDAOV2, BlobStore blobStore, AttachmentIdAssignationStrategy attachmentIdAssignationStrategy) {
         this.attachmentDAOV2 = attachmentDAOV2;
         this.blobStore = blobStore;
-        this.attachmentIdFactory = attachmentIdFactory;
+        this.attachmentIdAssignationStrategy = attachmentIdAssignationStrategy;
     }
 
     @Override
@@ -130,7 +148,7 @@ public Mono<List<MessageAttachmentMetadata>> storeAttachmentsReactive(Collection
 
     private Mono<MessageAttachmentMetadata> storeAttachmentAsync(ParsedAttachment parsedAttachment, MessageId ownerMessageId) {
         try {
-            AttachmentId attachmentId = attachmentIdFactory.random();
+            AttachmentId attachmentId = attachmentIdAssignationStrategy.assign(parsedAttachment, ownerMessageId);
             ByteSource content = parsedAttachment.getContent();
             long size = content.size();
             return Mono.from(blobStore.save(blobStore.getDefaultBucketName(), content, LOW_COST))
diff --git a/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/utils/GuiceUtils.java b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/utils/GuiceUtils.java
index ecbb898d0b3..4e64d8f3a86 100644
--- a/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/utils/GuiceUtils.java
+++ b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/utils/GuiceUtils.java
@@ -42,6 +42,7 @@
 import org.apache.james.mailbox.cassandra.ids.CassandraMessageId;
 import org.apache.james.mailbox.cassandra.mail.ACLMapper;
 import org.apache.james.mailbox.cassandra.mail.CassandraACLMapper;
+import org.apache.james.mailbox.cassandra.mail.CassandraAttachmentMapper;
 import org.apache.james.mailbox.cassandra.mail.CassandraModSeqProvider;
 import org.apache.james.mailbox.cassandra.mail.CassandraUidProvider;
 import org.apache.james.mailbox.cassandra.mail.eventsourcing.acl.ACLModule;
@@ -85,6 +86,7 @@ public static Module commonModules(CqlSession session, CassandraTypesProvider ty
             binder -> binder.bind(MessageId.Factory.class).toInstance(messageIdFactory),
             binder -> binder.bind(BatchSizes.class).toInstance(BatchSizes.defaultValues()),
             binder -> binder.bind(UidProvider.class).to(CassandraUidProvider.class),
+            binder -> binder.bind(CassandraAttachmentMapper.AttachmentIdAssignationStrategy.class).to(CassandraAttachmentMapper.AttachmentIdAssignationStrategy.Default.class),
             binder -> binder.bind(ModSeqProvider.class).to(CassandraModSeqProvider.class),
             binder -> binder.bind(ACLMapper.class).to(CassandraACLMapper.class),
             binder -> binder.bind(BlobId.Factory.class).toInstance(new PlainBlobId.Factory()),
diff --git a/server/container/guice/cassandra/src/main/java/org/apache/james/modules/mailbox/CassandraMailboxModule.java b/server/container/guice/cassandra/src/main/java/org/apache/james/modules/mailbox/CassandraMailboxModule.java
index fd6c2b9f1e0..5a63333ef39 100644
--- a/server/container/guice/cassandra/src/main/java/org/apache/james/modules/mailbox/CassandraMailboxModule.java
+++ b/server/container/guice/cassandra/src/main/java/org/apache/james/modules/mailbox/CassandraMailboxModule.java
@@ -75,6 +75,7 @@
 import org.apache.james.mailbox.cassandra.mail.CassandraACLMapper;
 import org.apache.james.mailbox.cassandra.mail.CassandraApplicableFlagDAO;
 import org.apache.james.mailbox.cassandra.mail.CassandraAttachmentDAOV2;
+import org.apache.james.mailbox.cassandra.mail.CassandraAttachmentMapper;
 import org.apache.james.mailbox.cassandra.mail.CassandraDeletedMessageDAO;
 import org.apache.james.mailbox.cassandra.mail.CassandraFirstUnseenDAO;
 import org.apache.james.mailbox.cassandra.mail.CassandraMailboxCounterDAO;
@@ -218,6 +219,7 @@ protected void configure() {
         bind(AttachmentContentLoader.class).to(AttachmentManager.class);
         bind(MailboxCounterCorrector.class).to(CassandraMailboxCounterCorrector.class);
         bind(MessageParser.class).toInstance(new MessageParserImpl());
+        bind(CassandraAttachmentMapper.AttachmentIdAssignationStrategy.class).to(CassandraAttachmentMapper.AttachmentIdAssignationStrategy.Default.class);
 
         bind(Limit.class).annotatedWith(Names.named(CassandraEmailChangeRepository.LIMIT_NAME)).toInstance(Limit.of(256));
         bind(Limit.class).annotatedWith(Names.named(CassandraMailboxChangeRepository.LIMIT_NAME)).toInstance(Limit.of(256));