diff --git a/app/controllers/api/v1/accounts/portals_controller.rb b/app/controllers/api/v1/accounts/portals_controller.rb
index 6d3332d08..27c4126a6 100644
--- a/app/controllers/api/v1/accounts/portals_controller.rb
+++ b/app/controllers/api/v1/accounts/portals_controller.rb
@@ -18,7 +18,7 @@ class Api::V1::Accounts::PortalsController < Api::V1::Accounts::BaseController
     @portal = Current.account.portals.build(portal_params.merge(live_chat_widget_params))
     @portal.custom_domain = parsed_custom_domain
     @portal.save!
-    process_attached_logo
+    process_attached_logo if params[:blob_id].present?
   end
 
   def update
@@ -98,6 +98,8 @@ class Api::V1::Accounts::PortalsController < Api::V1::Accounts::BaseController
   end
 
   def parsed_custom_domain
+    return @portal.custom_domain if @portal.custom_domain.blank?
+
     domain = URI.parse(@portal.custom_domain)
     domain.is_a?(URI::HTTP) ? domain.host : @portal.custom_domain
   end
diff --git a/spec/controllers/api/v1/accounts/portals_controller_spec.rb b/spec/controllers/api/v1/accounts/portals_controller_spec.rb
index 4c45e4f0f..81240c557 100644
--- a/spec/controllers/api/v1/accounts/portals_controller_spec.rb
+++ b/spec/controllers/api/v1/accounts/portals_controller_spec.rb
@@ -100,6 +100,41 @@ RSpec.describe 'Api::V1::Accounts::Portals', type: :request do
         expect(json_response['name']).to eql('test_portal')
         expect(json_response['custom_domain']).to eql('support.chatwoot.dev')
       end
+
+      it 'creates portal when custom_domain is omitted from request body' do
+        portal_params = {
+          portal: {
+            name: 'test_portal_no_domain',
+            slug: 'test_kbase_no_domain'
+          }
+        }
+        post "/api/v1/accounts/#{account.id}/portals",
+             params: portal_params,
+             headers: admin.create_new_auth_token
+
+        expect(response).to have_http_status(:success)
+        json_response = response.parsed_body
+        expect(json_response['name']).to eql('test_portal_no_domain')
+        expect(json_response['custom_domain']).to be_nil
+      end
+
+      it 'creates portal when custom_domain is blank' do
+        portal_params = {
+          portal: {
+            name: 'test_portal_blank_domain',
+            slug: 'test_kbase_blank_domain',
+            custom_domain: ''
+          }
+        }
+        post "/api/v1/accounts/#{account.id}/portals",
+             params: portal_params,
+             headers: admin.create_new_auth_token
+
+        expect(response).to have_http_status(:success)
+        json_response = response.parsed_body
+        expect(json_response['name']).to eql('test_portal_blank_domain')
+        expect(json_response['custom_domain']).to be_blank
+      end
     end
   end