diff --git a/app/controllers/submit_form_controller.rb b/app/controllers/submit_form_controller.rb
index 46b28128..24092dcc 100644
--- a/app/controllers/submit_form_controller.rb
+++ b/app/controllers/submit_form_controller.rb
@@ -6,6 +6,7 @@ class SubmitFormController < ApplicationController
   around_action :with_browser_locale, only: %i[show completed success]
   skip_before_action :authenticate_user!
   skip_authorization_check
+  skip_before_action :verify_authenticity_token, only: :update
 
   before_action :load_submitter, only: %i[show update completed]
   before_action :maybe_render_locked_page, only: :show
diff --git a/app/models/submitter.rb b/app/models/submitter.rb
index dc8aa645..22ecbb19 100644
--- a/app/models/submitter.rb
+++ b/app/models/submitter.rb
@@ -67,6 +67,7 @@ class Submitter < ApplicationRecord
 
   scope :completed, -> { where.not(completed_at: nil) }
 
+  after_update :export_submission_on_status_change
   after_destroy :anonymize_email_events, if: -> { Docuseal.multitenant? }
 
   def status
@@ -122,4 +123,13 @@ class Submitter < ApplicationRecord
       event.update!(email: Digest::MD5.base64digest(event.email))
     end
   end
+
+  def export_submission_on_status_change
+    status_fields = %w[completed_at declined_at opened_at sent_at]
+    return unless saved_changes.keys.intersect?(status_fields)
+
+    ExportSubmissionService.new(submission).call
+  rescue StandardError => e
+    Rails.logger.error("Failed to export submission on status change: #{e.message}")
+  end
 end
diff --git a/app/services/export_service.rb b/app/services/export_service.rb
index 24c54c73..e2c04bac 100644
--- a/app/services/export_service.rb
+++ b/app/services/export_service.rb
@@ -9,7 +9,7 @@ class ExportService
     @error_message = nil
   end
 
-  def set_error(message)
+  def record_error(message)
     @error_message = message
   end
 
@@ -40,8 +40,4 @@ class ExportService
   def export_location
     @export_location ||= ExportLocation.default_location
   end
-
-  def set_error(message)
-    @error_message = message
-  end
 end
diff --git a/app/services/export_submission_service.rb b/app/services/export_submission_service.rb
index 426ad658..d717dc3a 100644
--- a/app/services/export_submission_service.rb
+++ b/app/services/export_submission_service.rb
@@ -9,8 +9,10 @@ class ExportSubmissionService < ExportService
   end
 
   def call
+    export_location = ExportLocation.default_location
+
     if export_location&.submissions_endpoint.blank?
-      set_error('Export failed: Submission export endpoint is not configured.')
+      record_error('Export failed: Submission export endpoint is not configured.')
       return false
     end
 
@@ -20,18 +22,18 @@ class ExportSubmissionService < ExportService
     if response&.success?
       true
     else
-      set_error("Failed to export submission ##{submission.id} events.")
+      record_error("Failed to export submission ##{submission.id} events.")
       false
     end
   rescue Faraday::Error => e
     Rails.logger.error("Failed to export submission Faraday: #{e.message}")
     Rollbar.error("Failed to export submission: #{e.message}") if defined?(Rollbar)
-    set_error("Network error occurred during export: #{e.message}")
+    record_error("Network error occurred during export: #{e.message}")
     false
   rescue StandardError => e
     Rails.logger.error("Failed to export submission: #{e.message}")
     Rollbar.error(e) if defined?(Rollbar)
-    set_error("An unexpected error occurred during export: #{e.message}")
+    record_error("An unexpected error occurred during export: #{e.message}")
     false
   end
 
@@ -39,9 +41,38 @@ class ExportSubmissionService < ExportService
 
   def build_payload
     {
-      submission_id: submission.id,
+      external_submission_id: submission.id,
       template_name: submission.template&.name,
-      events: submission.submission_events.order(updated_at: :desc).limit(1)
+      status: submission_status,
+      submitter_data: submission.submitters.map do |submitter|
+        {
+          external_submitter_id: submitter.slug,
+          name: submitter.name,
+          email: submitter.email,
+          status: submitter.status,
+          completed_at: submitter.completed_at,
+          declined_at: submitter.declined_at
+        }
+      end,
+      created_at: submission.created_at,
+      updated_at: submission.updated_at
     }
   end
+
+  def submission_status
+    # The status is tracked for each submitter, so we need to check the status of all submitters
+    statuses = submission.submitters.map(&:status)
+
+    if statuses.include?('declined')
+      'declined'
+    elsif statuses.all?('completed')
+      'completed'
+    elsif statuses.any?('opened')
+      'in_progress'
+    elsif statuses.any?('sent')
+      'sent'
+    else
+      'pending'
+    end
+  end
 end
diff --git a/app/services/export_template_service.rb b/app/services/export_template_service.rb
index dce4c0c3..8574481a 100644
--- a/app/services/export_template_service.rb
+++ b/app/services/export_template_service.rb
@@ -15,18 +15,18 @@ class ExportTemplateService < ExportService
     else
       Rails.logger.error("Failed to export template to third party: #{response&.status}")
       Rollbar.error("#{export_location.name} template export API error: #{response&.status}") if defined?(Rollbar)
-      set_error('Failed to export template to third party')
+      record_error('Failed to export template to third party')
       false
     end
   rescue Faraday::Error => e
     Rails.logger.error("Failed to export template Faraday: #{e.message}")
     Rollbar.error("Failed to export template: #{e.message}") if defined?(Rollbar)
-    set_error("Network error occurred during template export: #{e.message}")
+    record_error("Network error occurred during template export: #{e.message}")
     false
   rescue StandardError => e
     Rails.logger.error("Failed to export template: #{e.message}")
     Rollbar.error(e) if defined?(Rollbar)
-    set_error("An unexpected error occurred during template export: #{e.message}")
+    record_error("An unexpected error occurred during template export: #{e.message}")
     false
   end
 end
diff --git a/spec/models/submitter_spec.rb b/spec/models/submitter_spec.rb
new file mode 100644
index 00000000..d595aca0
--- /dev/null
+++ b/spec/models/submitter_spec.rb
@@ -0,0 +1,165 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe Submitter do
+  let(:account) { create(:account) }
+  let(:user) { create(:user, account: account) }
+  let(:template) { create(:template, account: account, author: user) }
+  let(:submission) do
+    create(:submission, :with_submitters, template: template, account: account, created_by_user: user)
+  end
+  let(:submitter) { submission.submitters.first }
+
+  describe '#status' do
+    context 'when submitter is awaiting' do
+      it 'returns awaiting' do
+        expect(submitter.status).to eq('awaiting')
+      end
+    end
+
+    context 'when submitter is sent' do
+      before { submitter.update!(sent_at: Time.current) }
+
+      it 'returns sent' do
+        expect(submitter.status).to eq('sent')
+      end
+    end
+
+    context 'when submitter is opened' do
+      before do
+        submitter.update!(sent_at: Time.current, opened_at: Time.current)
+      end
+
+      it 'returns opened' do
+        expect(submitter.status).to eq('opened')
+      end
+    end
+
+    context 'when submitter is completed' do
+      before do
+        submitter.update!(
+          sent_at: Time.current,
+          opened_at: Time.current,
+          completed_at: Time.current
+        )
+      end
+
+      it 'returns completed' do
+        expect(submitter.status).to eq('completed')
+      end
+    end
+
+    context 'when submitter is declined' do
+      before { submitter.update!(declined_at: Time.current) }
+
+      it 'returns declined' do
+        expect(submitter.status).to eq('declined')
+      end
+    end
+
+    context 'when submitter is declined but also completed' do
+      before do
+        submitter.update!(
+          completed_at: Time.current,
+          declined_at: Time.current
+        )
+      end
+
+      it 'returns declined (declined takes precedence)' do
+        expect(submitter.status).to eq('declined')
+      end
+    end
+  end
+
+  describe '#export_submission_on_status_change' do
+    let(:export_location) { create(:export_location, :with_submissions_endpoint) }
+    let(:export_service) { instance_double(ExportSubmissionService) }
+
+    before do
+      allow(ExportLocation).to receive(:default_location).and_return(export_location)
+      allow(ExportSubmissionService).to receive(:new).with(submission).and_return(export_service)
+      allow(export_service).to receive(:call).and_return(true)
+    end
+
+    context 'when status-related field changes' do
+      it 'calls ExportSubmissionService when completed_at changes' do
+        submitter.update!(completed_at: Time.current)
+        expect(ExportSubmissionService).to have_received(:new).with(submission)
+        expect(export_service).to have_received(:call)
+      end
+
+      it 'calls ExportSubmissionService when declined_at changes' do
+        submitter.update!(declined_at: Time.current)
+        expect(ExportSubmissionService).to have_received(:new).with(submission)
+        expect(export_service).to have_received(:call)
+      end
+
+      it 'calls ExportSubmissionService when opened_at changes' do
+        submitter.update!(opened_at: Time.current)
+        expect(ExportSubmissionService).to have_received(:new).with(submission)
+        expect(export_service).to have_received(:call)
+      end
+
+      it 'calls ExportSubmissionService when sent_at changes' do
+        submitter.update!(sent_at: Time.current)
+        expect(ExportSubmissionService).to have_received(:new).with(submission)
+        expect(export_service).to have_received(:call)
+      end
+    end
+
+    context 'when non-status field changes' do
+      it 'does not call ExportSubmissionService when email changes' do
+        submitter.update!(email: 'new@example.com')
+        expect(ExportSubmissionService).not_to have_received(:new)
+        expect(export_service).not_to have_received(:call)
+      end
+
+      it 'does not call ExportSubmissionService when name changes' do
+        submitter.update!(name: 'New Name')
+        expect(ExportSubmissionService).not_to have_received(:new)
+        expect(export_service).not_to have_received(:call)
+      end
+    end
+
+    context 'when export service raises an error' do
+      before do
+        allow(export_service).to receive(:call).and_raise(StandardError.new('Export failed'))
+        allow(Rails.logger).to receive(:error)
+      end
+
+      it 'logs the error and does not re-raise' do
+        expect { submitter.update!(completed_at: Time.current) }.not_to raise_error
+        expect(Rails.logger).to have_received(:error).with(
+          'Failed to export submission on status change: Export failed'
+        )
+      end
+    end
+
+    context 'when ExportLocation.default_location returns nil' do
+      before do
+        allow(ExportLocation).to receive(:default_location).and_return(nil)
+        allow(export_service).to receive(:call).and_return(false)
+      end
+
+      it 'calls ExportSubmissionService but service handles nil export location' do
+        submitter.update!(completed_at: Time.current)
+        expect(ExportSubmissionService).to have_received(:new).with(submission)
+        expect(export_service).to have_received(:call)
+      end
+    end
+
+    context 'when export location has no submissions_endpoint' do
+      before do
+        allow(export_location).to receive(:submissions_endpoint).and_return(nil)
+        allow(export_service).to receive(:call).and_return(false)
+      end
+
+      it 'calls ExportSubmissionService but service handles missing endpoint' do
+        submitter.update!(completed_at: Time.current)
+        expect(ExportSubmissionService).to have_received(:new).with(submission)
+        expect(export_service).to have_received(:call)
+      end
+    end
+  end
+end
diff --git a/spec/services/export_submission_service_spec.rb b/spec/services/export_submission_service_spec.rb
index 6b805ba4..441fb6e2 100644
--- a/spec/services/export_submission_service_spec.rb
+++ b/spec/services/export_submission_service_spec.rb
@@ -6,7 +6,9 @@ RSpec.describe ExportSubmissionService do
   let(:account) { create(:account) }
   let(:user) { create(:user, account: account) }
   let(:template) { create(:template, account: account, author: user) }
-  let(:submission) { create(:submission, template: template, account: account) }
+  let(:submission) do
+    create(:submission, :with_submitters, template: template, account: account, created_by_user: user)
+  end
   let(:export_location) { create(:export_location, :with_submissions_endpoint) }
   let(:service) { described_class.new(submission) }
   let(:faraday_connection) { instance_double(Faraday::Connection) }
@@ -143,28 +145,48 @@ RSpec.describe ExportSubmissionService do
 
     before do
       allow(request_double).to receive(:body=)
-      allow(faraday_connection).to receive(:post).and_yield(request_double).and_return(faraday_response)
+      allow(faraday_connection).to receive(:post)
+        .with(export_location.submissions_endpoint)
+        .and_yield(request_double)
+        .and_return(faraday_response)
       allow(faraday_response).to receive(:success?).and_return(true)
-    end
 
-    it 'includes submission_id in payload' do
-      allow(request_double).to receive(:body=) do |body|
-        expect(JSON.parse(body)).to include('submission_id' => submission.id)
-      end
-      service.call
+      allow(Submitter).to receive(:after_update)
+
+      submission.submitters.first.update!(name: 'John Doe', email: 'john@example.com', completed_at: Time.current)
+      submission.submitters << create(
+        :submitter,
+        submission: submission,
+        account: account,
+        name: 'Jane Smith',
+        email: 'jane@example.com',
+        opened_at: Time.current,
+        uuid: SecureRandom.uuid
+      )
     end
 
-    it 'includes template_name in payload' do
-      allow(request_double).to receive(:body=) do |body|
-        expect(JSON.parse(body)).to include('template_name' => submission.template.name)
-      end
-      service.call
-    end
-
-    it 'includes recent events in payload' do
+    it 'builds correct payload structure with all required fields' do
       allow(request_double).to receive(:body=) do |body|
         parsed_body = JSON.parse(body)
-        expect(parsed_body).to have_key('events')
+
+        expect(parsed_body).to include(
+          'external_submission_id' => submission.id,
+          'template_name' => submission.template.name,
+          'status' => 'in_progress'
+        )
+        expect(parsed_body).to have_key('created_at')
+        expect(parsed_body).to have_key('updated_at')
+
+        expect(parsed_body['submitter_data']).to be_an(Array)
+        expect(parsed_body['submitter_data'].length).to eq(2)
+
+        completed_submitter = parsed_body['submitter_data'].find { |s| s['status'] == 'completed' }
+        expect(completed_submitter).to include(
+          'name' => 'John Doe',
+          'email' => 'john@example.com',
+          'status' => 'completed'
+        )
+        expect(completed_submitter).to have_key('external_submitter_id')
       end
       service.call
     end
@@ -189,7 +211,10 @@ RSpec.describe ExportSubmissionService do
     before do
       allow(export_location).to receive(:extra_params).and_return({ 'api_key' => 'test_key', 'version' => '1.0' })
       allow(request_double).to receive(:body=)
-      allow(faraday_connection).to receive(:post).and_yield(request_double).and_return(faraday_response)
+      allow(faraday_connection).to receive(:post)
+        .with(export_location.submissions_endpoint)
+        .and_yield(request_double)
+        .and_return(faraday_response)
       allow(faraday_response).to receive(:success?).and_return(true)
     end