diff --git a/app/controllers/public/api/v1/inboxes/conversations_controller.rb b/app/controllers/public/api/v1/inboxes/conversations_controller.rb
index c79952372..1e20b2a1d 100644
--- a/app/controllers/public/api/v1/inboxes/conversations_controller.rb
+++ b/app/controllers/public/api/v1/inboxes/conversations_controller.rb
@@ -23,6 +23,7 @@ class Public::Api::V1::Inboxes::ConversationsController < Public::Api::V1::Inbox
   def update_last_seen
     @conversation.contact_last_seen_at = DateTime.now.utc
     @conversation.save!
+    ::Conversations::MarkMessagesAsReadJob.perform_later(@conversation)
     head :ok
   end
 
diff --git a/app/javascript/dashboard/components/widgets/conversation/bubble/Actions.vue b/app/javascript/dashboard/components/widgets/conversation/bubble/Actions.vue
index e03cc74ed..f3c7e4f3c 100644
--- a/app/javascript/dashboard/components/widgets/conversation/bubble/Actions.vue
+++ b/app/javascript/dashboard/components/widgets/conversation/bubble/Actions.vue
@@ -214,8 +214,8 @@ export default {
       if (this.isAWhatsAppChannel || this.isATwilioChannel) {
         return this.sourceId && this.isDelivered;
       }
-      // We will consider messages as delivered for web widget inbox if they are sent
-      if (this.isAWebWidgetInbox) {
+      // We will consider messages as delivered for web widget inbox and API inbox if they are sent
+      if (this.isAWebWidgetInbox || this.isAPIInbox) {
         return this.isSent;
       }
 
diff --git a/spec/controllers/public/api/v1/inbox/conversations_controller_spec.rb b/spec/controllers/public/api/v1/inbox/conversations_controller_spec.rb
index 0bd8cbfd0..3001263bf 100644
--- a/spec/controllers/public/api/v1/inbox/conversations_controller_spec.rb
+++ b/spec/controllers/public/api/v1/inbox/conversations_controller_spec.rb
@@ -81,6 +81,7 @@ RSpec.describe 'Public Inbox Contact Conversations API', type: :request do
 
     it 'updates the last seen of the conversation contact' do
       contact_last_seen_at = conversation.contact_last_seen_at
+      expect(Conversations::MarkMessagesAsReadJob).to receive(:perform_later).with(conversation)
       post update_last_seen_path
 
       expect(response).to have_http_status(:success)