diff --git a/plume-models/src/posts.rs b/plume-models/src/posts.rs
index f857d462..dd08af41 100644
--- a/plume-models/src/posts.rs
+++ b/plume-models/src/posts.rs
@@ -1210,6 +1210,16 @@ impl AsObject<User, Create, &DbConn> for Post {
     }
 }
 
+impl AsObject07<User, Create07, &DbConn> for Post {
+    type Error = Error;
+    type Output = Self;
+
+    fn activity07(self, _conn: &DbConn, _actor: User, _id: &str) -> Result<Self::Output> {
+        // TODO: check that _actor is actually one of the author?
+        Ok(self)
+    }
+}
+
 impl AsObject<User, Delete, &DbConn> for Post {
     type Error = Error;
     type Output = ();
@@ -1227,6 +1237,23 @@ impl AsObject<User, Delete, &DbConn> for Post {
     }
 }
 
+impl AsObject07<User, Delete07, &DbConn> for Post {
+    type Error = Error;
+    type Output = ();
+
+    fn activity07(self, conn: &DbConn, actor: User, _id: &str) -> Result<Self::Output> {
+        let can_delete = self
+            .get_authors(conn)?
+            .into_iter()
+            .any(|a| actor.id == a.id);
+        if can_delete {
+            self.delete(conn).map(|_| ())
+        } else {
+            Err(Error::Unauthorized)
+        }
+    }
+}
+
 pub struct PostUpdate {
     pub ap_url: String,
     pub title: Option<String>,