diff --git a/assets/javascripts/discourse-assign/assigned-messages-route-map.js.es6 b/assets/javascripts/discourse-assign/assigned-messages-route-map.js.es6
index 32ddd98..05e216e 100644
--- a/assets/javascripts/discourse-assign/assigned-messages-route-map.js.es6
+++ b/assets/javascripts/discourse-assign/assigned-messages-route-map.js.es6
@@ -1,6 +1,7 @@
 export default {
   resource: 'user.userPrivateMessages',
   map() {
-     this.route('assigned');
+    this.route('assigned');
+    this.route('assignedArchived');
   }
 };
diff --git a/assets/javascripts/discourse-assign/connectors/user-messages-nav/assigned-archived-messages.hbs b/assets/javascripts/discourse-assign/connectors/user-messages-nav/assigned-archived-messages.hbs
new file mode 100644
index 0000000..b75e32f
--- /dev/null
+++ b/assets/javascripts/discourse-assign/connectors/user-messages-nav/assigned-archived-messages.hbs
@@ -0,0 +1,3 @@
+{{#link-to 'userPrivateMessages.assignedArchived' model}}
+  {{i18n 'user.messages.archive'}}
+{{/link-to}}
diff --git a/assets/javascripts/discourse-assign/connectors/user-messages-nav/assigned-archived-messages.js.es6 b/assets/javascripts/discourse-assign/connectors/user-messages-nav/assigned-archived-messages.js.es6
new file mode 100644
index 0000000..f9717a6
--- /dev/null
+++ b/assets/javascripts/discourse-assign/connectors/user-messages-nav/assigned-archived-messages.js.es6
@@ -0,0 +1,11 @@
+import { shouldShowAssigned } from "discourse/plugins/discourse-assign/discourse-assign/connectors/user-messages-nav/assigned-messages";
+
+export default {
+  setupComponent() {
+    this.set('classNames', ['archive']);
+  },
+
+  shouldRender(args, component) {
+    return shouldShowAssigned(args, component);
+  }
+};
diff --git a/assets/javascripts/discourse-assign/connectors/user-messages-nav/assigned-messages.hbs b/assets/javascripts/discourse-assign/connectors/user-messages-nav/assigned-messages.hbs
index 5ec9f87..58984c4 100644
--- a/assets/javascripts/discourse-assign/connectors/user-messages-nav/assigned-messages.hbs
+++ b/assets/javascripts/discourse-assign/connectors/user-messages-nav/assigned-messages.hbs
@@ -1,3 +1,4 @@
 {{#link-to 'userPrivateMessages.assigned' model}}
+  {{d-icon "user-plus" class="glyph"}}
   {{i18n 'discourse_assign.assigned'}}
 {{/link-to}}
diff --git a/assets/javascripts/discourse-assign/connectors/user-messages-nav/assigned-messages.js.es6 b/assets/javascripts/discourse-assign/connectors/user-messages-nav/assigned-messages.js.es6
index ddcd421..153654e 100644
--- a/assets/javascripts/discourse-assign/connectors/user-messages-nav/assigned-messages.js.es6
+++ b/assets/javascripts/discourse-assign/connectors/user-messages-nav/assigned-messages.js.es6
@@ -1,6 +1,10 @@
+export function shouldShowAssigned(args, component) {
+  const needsButton = component.currentUser && component.currentUser.get('staff');
+  return needsButton && (!component.get('site.mobileView') || args.model.get('isPrivateMessage'));
+}
+
 export default {
   shouldRender(args, component) {
-    const needsButton = component.currentUser && component.currentUser.get('staff');
-    return needsButton && (!component.get('site.mobileView') || args.model.get('isPrivateMessage'));
+    return shouldShowAssigned(args, component);
   }
 };
diff --git a/assets/javascripts/discourse-assign/routes/user-private-messages-assigned-archived.js.es6 b/assets/javascripts/discourse-assign/routes/user-private-messages-assigned-archived.js.es6
new file mode 100644
index 0000000..5d395ae
--- /dev/null
+++ b/assets/javascripts/discourse-assign/routes/user-private-messages-assigned-archived.js.es6
@@ -0,0 +1,10 @@
+import createPMRoute from "discourse/routes/build-private-messages-route";
+
+export default createPMRoute('assignedArchived', 'private-messages-assigned').extend({
+  model() {
+    return this.store.findFiltered("topicList", {
+      filter: `topics/private-messages-assigned/${this.modelFor("user").get("username_lower")}`,
+      params: { status: "archived" }
+    });
+  }
+});
diff --git a/plugin.rb b/plugin.rb
index 0180d0a..5a8bdf2 100644
--- a/plugin.rb
+++ b/plugin.rb
@@ -115,9 +115,24 @@ after_initialize do
 
   add_to_class(:topic_query, :list_private_messages_assigned) do |user|
     list = private_messages_for(user, :all)
-    list = list.where("topics.id IN (
+    user_id = user.id.to_s
+
+    list = list
+      .joins("LEFT JOIN group_archived_messages gm ON gm.topic_id = topics.id")
+      .joins("
+        LEFT JOIN user_archived_messages um ON um.topic_id = topics.id AND um.user_id = #{user_id}
+      ")
+      .where("topics.id IN (
         SELECT topic_id FROM topic_custom_fields WHERE name = 'assigned_to_id' AND value = ?
-    )", user.id.to_s)
+      )", user_id)
+
+    list =
+      if @options[:status] == "archived"
+        list.where("gm.topic_id IS NOT NULL OR um.topic_id IS NOT NULL")
+      else
+        list.where("gm.topic_id IS NULL AND um.topic_id IS NULL")
+      end
+
     create_list(:private_messages, {}, list)
   end
 
diff --git a/spec/components/topic_query_spec.rb b/spec/components/topic_query_spec.rb
new file mode 100644
index 0000000..9728e8c
--- /dev/null
+++ b/spec/components/topic_query_spec.rb
@@ -0,0 +1,90 @@
+require 'rails_helper'
+
+describe TopicQuery do
+  describe '#list_private_messages_assigned' do
+    let(:user) { Fabricate(:user) }
+    let(:user2) { Fabricate(:user) }
+
+    let(:user_topic) do
+      Fabricate(:private_message_topic,
+        topic_allowed_users: [
+          Fabricate.build(:topic_allowed_user, user: user),
+          Fabricate.build(:topic_allowed_user, user: user2)
+        ],
+        posts: [Fabricate(:post)]
+      )
+    end
+
+    let(:assigned_topic) do
+      topic = Fabricate(:private_message_topic,
+        topic_allowed_users: [
+          Fabricate.build(:topic_allowed_user, user: user),
+          Fabricate.build(:topic_allowed_user, user: user2)
+        ],
+        posts: [Fabricate(:post)]
+      )
+
+      TopicAssigner.new(topic, user).assign(user)
+      topic
+    end
+
+    let(:group) { Fabricate(:group).add(user) }
+
+    let(:group_assigned_topic) do
+      topic = Fabricate(:private_message_topic,
+        topic_allowed_users: [],
+        topic_allowed_groups: [
+          Fabricate.build(:topic_allowed_group, group: group)
+        ],
+        posts: [Fabricate(:post)]
+      )
+
+      TopicAssigner.new(topic, user).assign(user)
+      topic
+    end
+
+    let(:options) { { status: 'archived' } }
+
+    before do
+      SiteSetting.assign_enabled = true
+      user_topic
+      assigned_topic
+      group_assigned_topic
+    end
+
+    it 'should return the right topics' do
+      expect(TopicQuery.new(user).list_private_messages_assigned(user).topics)
+        .to contain_exactly(assigned_topic, group_assigned_topic)
+
+      UserArchivedMessage.archive!(user2.id, assigned_topic.id)
+
+      expect(
+        TopicQuery.new(user).list_private_messages_assigned(user).topics
+      ).to contain_exactly(assigned_topic, group_assigned_topic)
+
+      expect(
+        TopicQuery.new(user, options).list_private_messages_assigned(user).topics
+      ).to eq([])
+
+      UserArchivedMessage.archive!(user.id, assigned_topic.id)
+
+      expect(
+        TopicQuery.new(user).list_private_messages_assigned(user).topics
+      ).to contain_exactly(group_assigned_topic)
+
+      expect(
+        TopicQuery.new(user, options).list_private_messages_assigned(user).topics
+      ).to contain_exactly(assigned_topic)
+
+      GroupArchivedMessage.archive!(group.id, group_assigned_topic.id)
+
+      expect(
+        TopicQuery.new(user).list_private_messages_assigned(user).topics
+      ).to eq([])
+
+      expect(
+        TopicQuery.new(user, options).list_private_messages_assigned(user).topics
+      ).to contain_exactly(assigned_topic, group_assigned_topic)
+    end
+  end
+end