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..f6121788 100644
--- a/app/models/submitter.rb
+++ b/app/models/submitter.rb
@@ -68,6 +68,7 @@ class Submitter < ApplicationRecord
   scope :completed, -> { where.not(completed_at: nil) }
 
   after_destroy :anonymize_email_events, if: -> { Docuseal.multitenant? }
+  after_update :export_submission_on_status_change
 
   def status
     if declined_at?
@@ -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 & status_fields).any?
+
+    ExportSubmissionService.new(submission).call
+  rescue => e
+    Rails.logger.error("Failed to export submission on status change: #{e.message}")
+  end
 end
diff --git a/app/services/export_submission_service.rb b/app/services/export_submission_service.rb
index 426ad658..02ff57b8 100644
--- a/app/services/export_submission_service.rb
+++ b/app/services/export_submission_service.rb
@@ -9,6 +9,8 @@ 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.')
       return false
@@ -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? { |s| s == 'completed' }
+      'completed'
+    elsif statuses.any? { |s| s == 'opened' }
+      'in_progress'
+    elsif statuses.any? { |s| s == 'sent' }
+      'sent'
+    else
+      'pending'
+    end
+  end
 end
diff --git a/spec/models/submitter_spec.rb b/spec/models/submitter_spec.rb
new file mode 100644
index 00000000..8fc19197
--- /dev/null
+++ b/spec/models/submitter_spec.rb
@@ -0,0 +1,161 @@
+# 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) { create(:submission, :with_submitters, template: template, account: account, created_by_user: user) }
+  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..2b019dc2 100644
--- a/spec/services/export_submission_service_spec.rb
+++ b/spec/services/export_submission_service_spec.rb
@@ -140,16 +140,19 @@ RSpec.describe ExportSubmissionService do
 
   describe 'payload building' do
     let(:request_double) { instance_double(Faraday::Request, body: nil) }
+    let(:submitter1) { create(:submitter, submission: submission, account: account, name: 'John Doe', email: 'john@example.com', completed_at: Time.current, uuid: SecureRandom.uuid) }
+    let(:submitter2) { create(:submitter, submission: submission, account: account, name: 'Jane Smith', email: 'jane@example.com', opened_at: Time.current, uuid: SecureRandom.uuid) }
 
     before do
+      submission.submitters << [submitter1, submitter2]
       allow(request_double).to receive(:body=)
       allow(faraday_connection).to receive(:post).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
+    it 'includes external_submission_id in payload' do
       allow(request_double).to receive(:body=) do |body|
-        expect(JSON.parse(body)).to include('submission_id' => submission.id)
+        expect(JSON.parse(body)).to include('external_submission_id' => submission.id)
       end
       service.call
     end
@@ -161,10 +164,52 @@ RSpec.describe ExportSubmissionService do
       service.call
     end
 
-    it 'includes recent events in payload' do
+    it 'includes submission status in payload' do
+      allow(request_double).to receive(:body=) do |body|
+        expect(JSON.parse(body)).to include('status' => 'in_progress')
+      end
+      service.call
+    end
+
+    it 'includes submitter_data array in payload' do
+      allow(request_double).to receive(:body=) do |body|
+        parsed_body = JSON.parse(body)
+        expect(parsed_body).to have_key('submitter_data')
+        expect(parsed_body['submitter_data']).to be_an(Array)
+        expect(parsed_body['submitter_data'].length).to eq(2)
+      end
+      service.call
+    end
+
+    it 'includes correct submitter data in payload' do
       allow(request_double).to receive(:body=) do |body|
         parsed_body = JSON.parse(body)
-        expect(parsed_body).to have_key('events')
+        submitter_data = parsed_body['submitter_data']
+
+        first_submitter = submitter_data.find { |s| s['email'] == 'john@example.com' }
+        expect(first_submitter).to include(
+          'external_submitter_id' => submitter1.slug,
+          'name' => 'John Doe',
+          'email' => 'john@example.com',
+          'status' => 'completed'
+        )
+
+        second_submitter = submitter_data.find { |s| s['email'] == 'jane@example.com' }
+        expect(second_submitter).to include(
+          'external_submitter_id' => submitter2.slug,
+          'name' => 'Jane Smith',
+          'email' => 'jane@example.com',
+          'status' => 'opened'
+        )
+      end
+      service.call
+    end
+
+    it 'includes created_at and updated_at in payload' do
+      allow(request_double).to receive(:body=) do |body|
+        parsed_body = JSON.parse(body)
+        expect(parsed_body).to have_key('created_at')
+        expect(parsed_body).to have_key('updated_at')
       end
       service.call
     end
@@ -183,6 +228,59 @@ RSpec.describe ExportSubmissionService do
     end
   end
 
+  describe '#submission_status' do
+    let(:service) { described_class.new(submission) }
+
+    context 'with multiple submitters' do
+      let(:submitter1) { create(:submitter, submission: submission, account: account, uuid: SecureRandom.uuid) }
+      let(:submitter2) { create(:submitter, submission: submission, account: account, uuid: SecureRandom.uuid) }
+
+      before do
+        submission.submitters << [submitter1, submitter2]
+      end
+
+      it 'returns declined when any submitter is declined' do
+        submitter1.declined_at = Time.current
+        submitter2.completed_at = Time.current
+        expect(service.send(:submission_status)).to eq('declined')
+      end
+
+      it 'returns completed when all submitters are completed' do
+        submitter1.completed_at = Time.current
+        submitter2.completed_at = Time.current
+        expect(service.send(:submission_status)).to eq('completed')
+      end
+
+      it 'returns in_progress when any submitter is opened but not all completed' do
+        submitter1.opened_at = Time.current
+        submitter2.sent_at = Time.current
+        expect(service.send(:submission_status)).to eq('in_progress')
+      end
+
+      it 'returns sent when any submitter is sent but none opened' do
+        submitter1.sent_at = Time.current
+        expect(service.send(:submission_status)).to eq('sent')
+      end
+
+      it 'returns pending when no submitters have been sent' do
+        expect(service.send(:submission_status)).to eq('pending')
+      end
+    end
+
+    context 'with single submitter' do
+      let(:submitter) { create(:submitter, submission: submission, account: account, uuid: SecureRandom.uuid) }
+
+      before do
+        submission.submitters << submitter
+      end
+
+      it 'returns the submitter status when single submitter' do
+        submitter.opened_at = Time.current
+        expect(service.send(:submission_status)).to eq('in_progress')
+      end
+    end
+  end
+
   describe 'extra_params handling' do
     let(:request_double) { instance_double(Faraday::Request, body: nil) }