diff --git a/pom.xml b/pom.xml
index 046ec55..b4a2621 100755
--- a/pom.xml
+++ b/pom.xml
@@ -28,7 +28,7 @@
 		<dependency>
 			<groupId>com.github.informatik-ag-ngl</groupId>
 			<artifactId>envoy-common</artifactId>
-			<version>develop-SNAPSHOT</version>
+			<version>f~attachment-SNAPSHOT</version>
 		</dependency>
 		<dependency>
 			<groupId>com.github.informatik-ag-ngl</groupId>
diff --git a/src/main/java/envoy/server/data/GroupMessage.java b/src/main/java/envoy/server/data/GroupMessage.java
index 13dcc49..91ba538 100644
--- a/src/main/java/envoy/server/data/GroupMessage.java
+++ b/src/main/java/envoy/server/data/GroupMessage.java
@@ -5,7 +5,7 @@ import java.util.Map;
 
 import javax.persistence.*;
 
-import envoy.data.MessageBuilder;
+import envoy.data.Group;
 
 /**
  * Project: <strong>envoy-server-standalone</strong><br>
@@ -57,15 +57,7 @@ public class GroupMessage extends Message {
 	 */
 	@Override
 	public envoy.data.GroupMessage toCommon() {
-		// TODO: Attachment
-		envoy.data.GroupMessage groupMessage = new MessageBuilder(sender.getID(), recipient.getID(), id).setDate(creationDate)
-			.setForwarded(forwarded)
-			.setStatus(status)
-			.setText(text)
-			.buildGroupMessage((envoy.data.Group) recipient.toCommon(), memberMessageStatus);
-		groupMessage.setReceivedDate(receivedDate);
-		groupMessage.setReadDate(readDate);
-		return groupMessage;
+		return prepareBuilder().buildGroupMessage((Group) recipient.toCommon(), memberMessageStatus);
 	}
 
 	/**
diff --git a/src/main/java/envoy/server/data/Message.java b/src/main/java/envoy/server/data/Message.java
index 5b81e7d..afe66c7 100755
--- a/src/main/java/envoy/server/data/Message.java
+++ b/src/main/java/envoy/server/data/Message.java
@@ -6,6 +6,8 @@ import java.time.LocalDateTime;
 
 import javax.persistence.*;
 
+import envoy.data.Attachment;
+import envoy.data.Attachment.AttachmentType;
 import envoy.data.Message.MessageStatus;
 import envoy.data.MessageBuilder;
 
@@ -63,6 +65,7 @@ public class Message {
 
 	protected String							text;
 	protected envoy.data.Message.MessageStatus	status;
+	protected AttachmentType					attachmentType;
 	protected byte[]							attachment;
 	protected boolean							forwarded;
 
@@ -91,7 +94,10 @@ public class Message {
 		sender			= persistenceManager.getUserByID(message.getSenderID());
 		recipient		= persistenceManager.getContactByID(message.getRecipientID());
 		forwarded		= message.isForwarded();
-		// TODO: Attachment
+		if (message.hasAttachment()) {
+			attachment		= message.getAttachment().getData();
+			attachmentType	= message.getAttachment().getType();
+		}
 	}
 
 	/**
@@ -102,15 +108,23 @@ public class Message {
 	 * @since Envoy Server Standalone v0.1-alpha
 	 */
 	public envoy.data.Message toCommon() {
-		// TODO: Attachment
-		envoy.data.Message message = new MessageBuilder(sender.getID(), recipient.getID(), id).setText(text)
-			.setDate(creationDate)
+		return prepareBuilder().build();
+	}
+
+	/**
+	 * @return a message builder containing the state of this message
+	 * @since Envoy Server Standalone v0.1-beta
+	 */
+	MessageBuilder prepareBuilder() {
+		var builder = new MessageBuilder(sender.getID(), recipient.getID(), id).setText(
+				text)
+			.setCreationDate(creationDate)
+			.setReceivedDate(receivedDate)
+			.setReadDate(readDate)
 			.setStatus(status)
-			.setForwarded(forwarded)
-			.build();
-		message.setReceivedDate(receivedDate);
-		message.setReadDate(readDate);
-		return message;
+			.setForwarded(forwarded);
+		if (attachment != null) builder.setAttachment(new Attachment(attachment, attachmentType));
+		return builder;
 	}
 
 	/**
@@ -250,6 +264,18 @@ public class Message {
 	 */
 	public void setAttachment(byte[] attachment) { this.attachment = attachment; }
 
+	/**
+	 * @return the attachmentType
+	 * @since Envoy Server Standalone v0.1-beta
+	 */
+	public AttachmentType getAttachmentType() { return attachmentType; }
+
+	/**
+	 * @param attachmentType the attachmentType to set
+	 * @since Envoy Server Standalone v0.1-beta
+	 */
+	public void setAttachmentType(AttachmentType attachmentType) { this.attachmentType = attachmentType; }
+
 	/**
 	 * @return whether this message is a forwarded message
 	 * @since Envoy Server Standalone v0.1-alpha