diff --git a/app/controllers/concerns/unconfirmed_user_concern.rb b/app/controllers/concerns/unconfirmed_user_concern.rb
index a027d47f8c4..f9ee2fe3f73 100644
--- a/app/controllers/concerns/unconfirmed_user_concern.rb
+++ b/app/controllers/concerns/unconfirmed_user_concern.rb
@@ -40,7 +40,7 @@ def email_confirmation_token_validator_result
 
   def email_confirmation_token_validator
     @email_confirmation_token_validator ||= begin
-      EmailConfirmationTokenValidator.new(@email_address, current_user)
+      EmailConfirmationTokenValidator.new(email_address: @email_address, current_user:)
     end
   end
 
diff --git a/app/controllers/sign_up/cancellations_controller.rb b/app/controllers/sign_up/cancellations_controller.rb
index 185f51056cd..b04993147e5 100644
--- a/app/controllers/sign_up/cancellations_controller.rb
+++ b/app/controllers/sign_up/cancellations_controller.rb
@@ -38,7 +38,7 @@ def find_user
 
       confirmation_token = session[:user_confirmation_token]
       email_address = EmailAddress.find_with_confirmation_token(confirmation_token)
-      @token_validator = EmailConfirmationTokenValidator.new(email_address, current_user)
+      @token_validator = EmailConfirmationTokenValidator.new(email_address:, current_user:)
       result = @token_validator.submit
 
       if result.success?
diff --git a/app/controllers/users/email_confirmations_controller.rb b/app/controllers/users/email_confirmations_controller.rb
index 0f6d468ffa3..e0f0c989fb4 100644
--- a/app/controllers/users/email_confirmations_controller.rb
+++ b/app/controllers/users/email_confirmations_controller.rb
@@ -3,8 +3,9 @@
 module Users
   class EmailConfirmationsController < ApplicationController
     def create
+      store_from_select_email_flow_in_session
       result = email_confirmation_token_validator.submit
-      analytics.add_email_confirmation(**result)
+      analytics.add_email_confirmation(**result, from_select_email_flow: from_select_email_flow?)
       if result.success?
         process_successful_confirmation(email_address)
       else
@@ -28,12 +29,8 @@ def email_address
     end
 
     def email_confirmation_token_validator
-      @email_confirmation_token_validator ||= begin
-        EmailConfirmationTokenValidator.new(
-          email_address,
-          current_user,
-        )
-      end
+      @email_confirmation_token_validator ||=
+        EmailConfirmationTokenValidator.new(email_address:, current_user:)
     end
 
     def email_address_already_confirmed?
@@ -42,7 +39,6 @@ def email_address_already_confirmed?
 
     def process_successful_confirmation(email_address)
       confirm_and_notify(email_address)
-      store_from_select_email_flow_in_session
       if current_user
         flash[:success] = t('devise.confirmations.confirmed')
         if params[:request_id]
@@ -107,5 +103,9 @@ def confirmation_params
     def store_from_select_email_flow_in_session
       session[:from_select_email_flow] = params[:from_select_email_flow].to_s == 'true'
     end
+
+    def from_select_email_flow?
+      session[:from_select_email_flow] == true
+    end
   end
 end
diff --git a/app/controllers/users/emails_controller.rb b/app/controllers/users/emails_controller.rb
index 09e24410d3e..0a229b41e13 100644
--- a/app/controllers/users/emails_controller.rb
+++ b/app/controllers/users/emails_controller.rb
@@ -11,16 +11,14 @@ class EmailsController < ApplicationController
     before_action :confirm_recently_authenticated_2fa
 
     def show
-      analytics.add_email_visit
-      session[:in_select_email_flow] = params[:in_select_email_flow]
+      session[:in_select_email_flow] = true if params[:in_select_email_flow]
+      analytics.add_email_visit(in_select_email_flow: in_select_email_flow?)
       @add_user_email_form = AddUserEmailForm.new
       @pending_completions_consent = pending_completions_consent?
     end
 
     def add
-      @add_user_email_form = AddUserEmailForm.new(
-        session[:in_select_email_flow],
-      )
+      @add_user_email_form = AddUserEmailForm.new(in_select_email_flow: in_select_email_flow?)
 
       result = @add_user_email_form.submit(
         current_user, permitted_params.merge(request_id:)
@@ -83,6 +81,10 @@ def verify
 
     private
 
+    def in_select_email_flow?
+      session[:in_select_email_flow] == true
+    end
+
     def authorize_user_to_edit_email
       return render_not_found if email_address.user != current_user
     rescue ActiveRecord::RecordNotFound
diff --git a/app/forms/add_user_email_form.rb b/app/forms/add_user_email_form.rb
index f34ad455ba5..b7fe652b9d8 100644
--- a/app/forms/add_user_email_form.rb
+++ b/app/forms/add_user_email_form.rb
@@ -6,12 +6,13 @@ class AddUserEmailForm
   include ActionView::Helpers::TranslationHelper
 
   attr_reader :email, :in_select_email_flow
+  alias_method :in_select_email_flow?, :in_select_email_flow
 
   def self.model_name
     ActiveModel::Name.new(self, nil, 'User')
   end
 
-  def initialize(in_select_email_flow = nil)
+  def initialize(in_select_email_flow: false)
     @in_select_email_flow = in_select_email_flow
   end
 
@@ -52,13 +53,14 @@ def process_successful_submission
     @success = true
     email_address.save!
     SendAddEmailConfirmation.new(user).
-      call(email_address:, in_select_email_flow:, request_id:)
+      call(email_address:, in_select_email_flow: in_select_email_flow?, request_id:)
   end
 
   def extra_analytics_attributes
     {
       user_id: existing_user.uuid,
       domain_name: email&.split('@')&.last,
+      in_select_email_flow: in_select_email_flow?,
     }
   end
 
diff --git a/app/forms/select_email_form.rb b/app/forms/select_email_form.rb
index c5b9ca3517d..b00bc3ce636 100644
--- a/app/forms/select_email_form.rb
+++ b/app/forms/select_email_form.rb
@@ -14,16 +14,25 @@ def initialize(user:, identity: nil)
   end
 
   def submit(params)
-    @selected_email_id = params[:selected_email_id]
+    @selected_email_id = params[:selected_email_id].try(:to_i) if !params[:selected_email_id].blank?
 
     success = valid?
     identity.update(email_address_id: selected_email_id) if success && identity
 
-    FormResponse.new(success:, errors:, serialize_error_details_only: true)
+    FormResponse.new(
+      success:,
+      errors:,
+      extra: extra_analytics_attributes,
+      serialize_error_details_only: true,
+    )
   end
 
   private
 
+  def extra_analytics_attributes
+    { selected_email_id: }
+  end
+
   def validate_owns_selected_email
     return if user.confirmed_email_addresses.exists?(id: selected_email_id)
     errors.add(:selected_email_id, :not_found, message: t('email_address.not_found'))
diff --git a/app/services/analytics_events.rb b/app/services/analytics_events.rb
index 257cb23c201..e617ff89b31 100644
--- a/app/services/analytics_events.rb
+++ b/app/services/analytics_events.rb
@@ -243,14 +243,24 @@ def account_visit
   # @param [Hash] errors Errors resulting from form validation
   # @param [Hash] error_details Details for errors that occurred in unsuccessful submission
   # @param [String] user_id User the email is linked to
+  # @param [Boolean] from_select_email_flow Whether email was added as part of partner email
+  # selection.
   # A user has clicked the confirmation link in an email
-  def add_email_confirmation(user_id:, success:, errors:, error_details: nil, **extra)
+  def add_email_confirmation(
+    user_id:,
+    success:,
+    errors:,
+    from_select_email_flow:,
+    error_details: nil,
+    **extra
+  )
     track_event(
       'Add Email: Email Confirmation',
       user_id:,
       success:,
       errors:,
       error_details:,
+      from_select_email_flow:,
       **extra,
     )
   end
@@ -259,21 +269,33 @@ def add_email_confirmation(user_id:, success:, errors:, error_details: nil, **ex
   # @param [Hash] errors Errors resulting from form validation
   # @param [Hash] error_details Details for errors that occurred in unsuccessful submission
   # @param [String] domain_name Domain name of email address submitted
+  # @param [Boolean] in_select_email_flow Whether email is being added as part of partner email
+  # selection.
   # Tracks request for adding new emails to an account
-  def add_email_request(success:, errors:, domain_name:, error_details: nil, **extra)
+  def add_email_request(
+    success:,
+    errors:,
+    domain_name:,
+    in_select_email_flow:,
+    error_details: nil,
+    **extra
+  )
     track_event(
       'Add Email Requested',
       success:,
       errors:,
       error_details:,
       domain_name:,
+      in_select_email_flow:,
       **extra,
     )
   end
 
   # When a user views the add email address page
-  def add_email_visit
-    track_event('Add Email Address Page Visited')
+  # @param [Boolean] in_select_email_flow Whether email is being added as part of partner email
+  # selection.
+  def add_email_visit(in_select_email_flow:, **extra)
+    track_event('Add Email Address Page Visited', in_select_email_flow:, **extra)
   end
 
   # Tracks When users visit the add phone page
@@ -6825,10 +6847,12 @@ def sp_revoke_consent_visited(issuer:, **extra)
   # User submitted form to change email shared with service provider
   # @param [Boolean] success Whether form validation was successful
   # @param [Hash] error_details Details for errors that occurred in unsuccessful submission
+  # @param [Integer] selected_email_id Selected email address record ID
   # @param [String, nil] needs_completion_screen_reason Reason for the consent screen being shown,
   # if user is changing email in consent flow
   def sp_select_email_submitted(
     success:,
+    selected_email_id:,
     error_details: nil,
     needs_completion_screen_reason: nil,
     **extra
@@ -6838,6 +6862,7 @@ def sp_select_email_submitted(
       success:,
       error_details:,
       needs_completion_screen_reason:,
+      selected_email_id:,
       **extra,
     )
   end
@@ -7135,10 +7160,10 @@ def user_registration_email_confirmation(
   )
     track_event(
       'User Registration: Email Confirmation',
-      success: success,
-      errors: errors,
-      error_details: error_details,
-      user_id: user_id,
+      success:,
+      errors:,
+      error_details:,
+      user_id:,
       **extra,
     )
   end
diff --git a/app/services/email_confirmation_token_validator.rb b/app/services/email_confirmation_token_validator.rb
index 49baae8350b..8898071bdf4 100644
--- a/app/services/email_confirmation_token_validator.rb
+++ b/app/services/email_confirmation_token_validator.rb
@@ -9,7 +9,7 @@ class EmailConfirmationTokenValidator
   validate :email_not_already_confirmed, if: :email_address_found_with_token?
   validate :token_not_expired, if: :email_address_found_with_token?
 
-  def initialize(email_address, current_user = nil)
+  def initialize(email_address:, current_user: nil)
     @current_user = current_user
     @email_address = email_address
     @user = email_address&.user
diff --git a/spec/controllers/accounts/connected_accounts/selected_email_controller_spec.rb b/spec/controllers/accounts/connected_accounts/selected_email_controller_spec.rb
index 0b66e62c194..5bf6e380b58 100644
--- a/spec/controllers/accounts/connected_accounts/selected_email_controller_spec.rb
+++ b/spec/controllers/accounts/connected_accounts/selected_email_controller_spec.rb
@@ -90,11 +90,15 @@
 
       response
 
-      expect(@analytics).to have_logged_event(:sp_select_email_submitted, success: true)
+      expect(@analytics).to have_logged_event(
+        :sp_select_email_submitted,
+        success: true,
+        selected_email_id: selected_email.id,
+      )
     end
 
     context 'with invalid submission' do
-      let(:params) { super().merge(select_email_form: { selected_email_id: nil }) }
+      let(:params) { super().merge(select_email_form: { selected_email_id: '' }) }
 
       it 'redirects to form with flash' do
         expect(response).to redirect_to(edit_connected_account_selected_email_path(identity.id))
diff --git a/spec/controllers/sign_up/passwords_controller_spec.rb b/spec/controllers/sign_up/passwords_controller_spec.rb
index 9d910e9bf57..e0979324944 100644
--- a/spec/controllers/sign_up/passwords_controller_spec.rb
+++ b/spec/controllers/sign_up/passwords_controller_spec.rb
@@ -171,7 +171,7 @@
       end
 
       it 'rejects when confirmation_token is invalid' do
-        validator = EmailConfirmationTokenValidator.new(user.email_addresses.first)
+        validator = EmailConfirmationTokenValidator.new(email_address: user.email_addresses.first)
         result = validator.submit
         expect(result.success?).to eq false
 
diff --git a/spec/controllers/sign_up/select_email_controller_spec.rb b/spec/controllers/sign_up/select_email_controller_spec.rb
index 4966281dccc..8c6f65575fb 100644
--- a/spec/controllers/sign_up/select_email_controller_spec.rb
+++ b/spec/controllers/sign_up/select_email_controller_spec.rb
@@ -107,6 +107,7 @@
         :sp_select_email_submitted,
         success: true,
         needs_completion_screen_reason: :new_attributes,
+        selected_email_id: selected_email.id,
       )
     end
 
@@ -131,6 +132,7 @@
           success: false,
           error_details: { selected_email_id: { not_found: true } },
           needs_completion_screen_reason: :new_attributes,
+          selected_email_id: selected_email.id,
         )
       end
     end
diff --git a/spec/controllers/users/email_confirmations_controller_spec.rb b/spec/controllers/users/email_confirmations_controller_spec.rb
index 8d3197ad185..826b9374f01 100644
--- a/spec/controllers/users/email_confirmations_controller_spec.rb
+++ b/spec/controllers/users/email_confirmations_controller_spec.rb
@@ -4,6 +4,8 @@
   describe '#create' do
     describe 'Valid email confirmation tokens' do
       it 'tracks a valid email confirmation token event' do
+        stub_analytics
+
         user = create(:user)
         new_email = Faker::Internet.email
 
@@ -23,6 +25,14 @@
         email_record = add_email_form.email_address_record(new_email)
 
         get :create, params: { confirmation_token: email_record.reload.confirmation_token }
+
+        expect(@analytics).to have_logged_event(
+          'Add Email: Email Confirmation',
+          success: true,
+          errors: {},
+          from_select_email_flow: false,
+          user_id: user.uuid,
+        )
       end
 
       context 'when select email feature is disabled' do
@@ -126,6 +136,7 @@
         end
 
         it 'adds an email from the service provider consent flow' do
+          stub_analytics
           new_email = Faker::Internet.email
           add_email_form = AddUserEmailForm.new
           add_email_form.submit(user, email: new_email, request_id: sp_request_uuid)
@@ -134,8 +145,16 @@
           get :create, params: {
             confirmation_token: email_record.reload.confirmation_token,
             request_id: sp_request_uuid,
+            from_select_email_flow: 'true',
           }
 
+          expect(@analytics).to have_logged_event(
+            'Add Email: Email Confirmation',
+            success: true,
+            errors: {},
+            from_select_email_flow: true,
+            user_id: user.uuid,
+          )
           expect(response).to redirect_to(sign_up_select_email_url)
         end
       end
diff --git a/spec/controllers/users/emails_controller_spec.rb b/spec/controllers/users/emails_controller_spec.rb
index bfc142718af..ae29f8e71ea 100644
--- a/spec/controllers/users/emails_controller_spec.rb
+++ b/spec/controllers/users/emails_controller_spec.rb
@@ -1,6 +1,94 @@
 require 'rails_helper'
 
 RSpec.describe Users::EmailsController do
+  describe '#show' do
+    subject(:response) { get :show, params: params }
+    let(:params) { {} }
+
+    before do
+      stub_sign_in
+    end
+
+    it 'does not session value for email selection flow' do
+      expect { response }.not_to change { controller.session[:in_select_email_flow] }.from(nil)
+    end
+
+    it 'logs visit' do
+      stub_analytics
+
+      response
+
+      expect(@analytics).to have_logged_event(
+        'Add Email Address Page Visited',
+        in_select_email_flow: false,
+      )
+    end
+
+    context 'when adding through partner email selection flow' do
+      let(:params) { { in_select_email_flow: true } }
+
+      it 'assigns session value for email selection flow' do
+        expect { response }.to change { controller.session[:in_select_email_flow] }.
+          from(nil).to(true)
+      end
+
+      it 'logs visit with selected email value' do
+        stub_analytics
+
+        response
+
+        expect(@analytics).to have_logged_event(
+          'Add Email Address Page Visited',
+          in_select_email_flow: true,
+        )
+      end
+    end
+  end
+
+  describe '#add' do
+    subject(:response) { post :add, params: params }
+    let(:user) { create(:user) }
+    let(:params) { { user: { email:, request_id: } } }
+    let(:email) { 'new@example.com' }
+    let(:request_id) { 'request-id-1' }
+
+    before do
+      stub_sign_in(user)
+    end
+
+    it 'logs submission' do
+      stub_analytics
+
+      response
+
+      expect(@analytics).to have_logged_event(
+        'Add Email Requested',
+        success: true,
+        errors: {},
+        domain_name: 'example.com',
+        in_select_email_flow: false,
+        user_id: user.uuid,
+      )
+    end
+
+    context 'when adding through partner email selection flow' do
+      before do
+        controller.session[:in_select_email_flow] = true
+      end
+
+      it 'logs submission with selected email value' do
+        stub_analytics
+
+        response
+
+        expect(@analytics).to have_logged_event(
+          'Add Email Requested',
+          hash_including(in_select_email_flow: true),
+        )
+      end
+    end
+  end
+
   describe '#verify' do
     context 'with malformed payload' do
       it 'does not blow up' do
@@ -21,7 +109,10 @@
     it 'renders the show view' do
       get :show
 
-      expect(@analytics).to have_logged_event('Add Email Address Page Visited')
+      expect(@analytics).to have_logged_event(
+        'Add Email Address Page Visited',
+        in_select_email_flow: false,
+      )
     end
   end
 
@@ -86,6 +177,7 @@
           errors: {},
           user_id: user.uuid,
           domain_name: email.split('@').last,
+          in_select_email_flow: false,
         )
 
         post :resend
diff --git a/spec/forms/add_user_email_form_spec.rb b/spec/forms/add_user_email_form_spec.rb
index 18a1b72b0fe..a6d1d45c1b6 100644
--- a/spec/forms/add_user_email_form_spec.rb
+++ b/spec/forms/add_user_email_form_spec.rb
@@ -8,8 +8,19 @@
 
   describe '#submit' do
     let(:new_email) { 'new@example.com' }
-
-    subject(:submit) { form.submit(user, email: new_email) }
+    let(:request_id) { 'request-id-1' }
+
+    subject(:submit) { form.submit(user, email: new_email, request_id:) }
+
+    it 'returns a successful result' do
+      expect(submit.to_h).to eq(
+        success: true,
+        errors: {},
+        domain_name: 'example.com',
+        in_select_email_flow: false,
+        user_id: user.uuid,
+      )
+    end
 
     it 'creates a new EmailAddress record for a new email address' do
       expect(EmailAddress.find_with_email(new_email)).to be_nil
@@ -79,5 +90,31 @@
         end
       end
     end
+
+    context 'in select email flow' do
+      subject(:form) { AddUserEmailForm.new(in_select_email_flow: true) }
+
+      it 'sends email confirm with parameter value' do
+        send_add_email_confirmation = instance_double(SendAddEmailConfirmation)
+        expect(SendAddEmailConfirmation).to receive(:new).and_return(send_add_email_confirmation)
+        expect(send_add_email_confirmation).to receive(:call).with(
+          email_address: kind_of(EmailAddress),
+          in_select_email_flow: true,
+          request_id:,
+        )
+
+        submit
+      end
+
+      it 'includes extra analytics in result for flow value' do
+        expect(submit.to_h).to eq(
+          success: true,
+          errors: {},
+          domain_name: 'example.com',
+          in_select_email_flow: true,
+          user_id: user.uuid,
+        )
+      end
+    end
   end
 end
diff --git a/spec/forms/select_email_form_spec.rb b/spec/forms/select_email_form_spec.rb
index 3fea0f38232..539fd7ef340 100644
--- a/spec/forms/select_email_form_spec.rb
+++ b/spec/forms/select_email_form_spec.rb
@@ -14,7 +14,7 @@
       let(:selected_email_id) { user.confirmed_email_addresses.take.id }
 
       it 'is successful' do
-        expect(response.to_h).to eq(success: true)
+        expect(response.to_h).to eq(success: true, selected_email_id:)
       end
 
       context 'with associated identity' do
@@ -29,15 +29,28 @@
     end
 
     context 'with an invalid email id' do
-      let(:selected_email_id) { nil }
+      let(:selected_email_id) { '' }
 
       it 'is unsuccessful' do
         expect(response.to_h).to eq(
           success: false,
           error_details: { selected_email_id: { not_found: true } },
+          selected_email_id: nil,
         )
       end
 
+      context 'with present value that does not convert to numeric' do
+        let(:selected_email_id) { true }
+
+        it 'is unsuccessful without raising exception' do
+          expect(response.to_h).to eq(
+            success: false,
+            error_details: { selected_email_id: { not_found: true } },
+            selected_email_id: nil,
+          )
+        end
+      end
+
       context 'with associated identity' do
         let(:identity) do
           create(
@@ -55,7 +68,7 @@
     end
 
     context 'with an unconfirmed email address added' do
-      let(:selected_email_id) { user.email_addresses.find_by(confirmed_at: nil) }
+      let(:selected_email_id) { user.email_addresses.find_by(confirmed_at: nil).id }
 
       before do
         create(:email_address, :unconfirmed, user:)
@@ -65,6 +78,7 @@
         expect(response.to_h).to eq(
           success: false,
           error_details: { selected_email_id: { not_found: true } },
+          selected_email_id:,
         )
       end
 
@@ -85,6 +99,7 @@
         expect(response.to_h).to eq(
           success: false,
           error_details: { selected_email_id: { not_found: true } },
+          selected_email_id:,
         )
       end
 
diff --git a/spec/services/email_confirmation_token_validator_spec.rb b/spec/services/email_confirmation_token_validator_spec.rb
index 8be91518c75..d63e3a2d747 100644
--- a/spec/services/email_confirmation_token_validator_spec.rb
+++ b/spec/services/email_confirmation_token_validator_spec.rb
@@ -2,7 +2,7 @@
 
 RSpec.describe EmailConfirmationTokenValidator do
   describe '#submit' do
-    subject { described_class.new(email_address, current_user) }
+    subject { described_class.new(email_address:, current_user:) }
 
     context 'the email of the user does not match the user confirming' do
       let(:current_user) { create(:user, :fully_registered) }
@@ -88,7 +88,7 @@
   end
 
   describe '#email_address_already_confirmed_by_user?' do
-    subject { described_class.new(email_address) }
+    subject { described_class.new(email_address:) }
 
     context 'the email address was confirmed by the user' do
       let(:email_address) do