diff --git a/boards/models/post.py b/boards/models/post.py
--- a/boards/models/post.py
+++ b/boards/models/post.py
@@ -57,6 +57,8 @@ TAG_NEXT = 'next'
 TAG_SIGNATURES = 'signatures'
 TAG_SIGNATURE = 'signature'
 TAG_CONTENT = 'content'
+TAG_ATTACHMENTS = 'attachments'
+TAG_ATTACHMENT = 'attachment'
 
 TYPE_GET = 'get'
 
@@ -64,6 +66,7 @@ ATTR_VERSION = 'version'
 ATTR_TYPE = 'type'
 ATTR_NAME = 'name'
 ATTR_VALUE = 'value'
+ATTR_MIMETYPE = 'mimetype'
 
 STATUS_SUCCESS = 'success'
 
@@ -238,6 +241,9 @@ class PostManager(models.Manager):
             if not post.is_opening():
                 thread = et.SubElement(content_tag, TAG_THREAD)
                 thread.text = str(post.get_thread().get_opening_post_id())
+            else:
+                # TODO Output tags here
+                pass
 
             pub_time = et.SubElement(content_tag, TAG_PUB_TIME)
             pub_time.text = str(post.get_pub_time_epoch())
diff --git a/docs/samples/response_get.xml b/docs/samples/response_get.xml
--- a/docs/samples/response_get.xml
+++ b/docs/samples/response_get.xml
@@ -16,6 +16,19 @@
                 <text>Thirteen</text>
                 <thread>id1/12</thread>
                 <pub-time>12</pub-time>
+                <!--
+                    Images are saved as attachments and included in the
+                    signature.
+                -->
+                <attachments>
+                    <attachment mimetype="image/png" name="12345.png">
+                        TWFuIGlzIGRpc3Rpbmd1aXNoZWQsIG5vdCBvbmx5IGJ5IGhpcyByZWFzb24sIGJ1dCBieSB0
+                        aGlzIHNpbmd1bGFyIHBhc3Npb24gZnJvbSBvdGhlciBhbmltYWxzLCB3aGljaCBpcyBhIGx1
+                        c3Qgb2YgdGhlIG1pbmQsIHRoYXQgYnkgYSBwZXJzZXZlcmFuY2Ugb2YgZGVsaWdodCBpbiB0
+                        aGUgY29udGludWVkIGFuZCBpbmRlZmF0aWdhYmxlIGdlbmVyYXRpb24gb2Yga25vd2xlZGdl
+                        LCBleGNlZWRzIHRoZSBzaG9ydCB2ZWhlbWVuY2Ugb2YgYW55IGNhcm5hbCBwbGVhc3VyZS4=
+                    </attachment>
+                </attachments>
             </content>
             <!--
                 There can be several signatures for one model. At least one