diff --git a/actionmailbox/CHANGELOG.md b/actionmailbox/CHANGELOG.md
index 3a852ad7ef5ea..42662e61c694b 100644
--- a/actionmailbox/CHANGELOG.md
+++ b/actionmailbox/CHANGELOG.md
@@ -1,3 +1,7 @@
+*   Add way to deliver emails via source instead of filling out a form through the conductor interface.
+
+    *DHH*
+
 *   Mailgun ingress now passes through the envelope recipient as `X-Original-To`.
 
     *Rikki Pitt*
diff --git a/actionmailbox/app/controllers/rails/conductor/action_mailbox/inbound_emails/sources_controller.rb b/actionmailbox/app/controllers/rails/conductor/action_mailbox/inbound_emails/sources_controller.rb
new file mode 100644
index 0000000000000..bfc013e9bcf10
--- /dev/null
+++ b/actionmailbox/app/controllers/rails/conductor/action_mailbox/inbound_emails/sources_controller.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+module Rails
+  class Conductor::ActionMailbox::InboundEmails::SourcesController < Rails::Conductor::BaseController
+    def new
+    end
+
+    def create
+      inbound_email = ActionMailbox::InboundEmail.create_and_extract_message_id! params[:source]
+      redirect_to main_app.rails_conductor_inbound_email_url(inbound_email)
+    end
+  end
+end
diff --git a/actionmailbox/app/views/rails/conductor/action_mailbox/inbound_emails/index.html.erb b/actionmailbox/app/views/rails/conductor/action_mailbox/inbound_emails/index.html.erb
index 19c53984e202e..dd501b398c527 100644
--- a/actionmailbox/app/views/rails/conductor/action_mailbox/inbound_emails/index.html.erb
+++ b/actionmailbox/app/views/rails/conductor/action_mailbox/inbound_emails/index.html.erb
@@ -12,4 +12,5 @@
   <% end %>
 </table>
 
-<%= link_to "Deliver new inbound email", main_app.new_rails_conductor_inbound_email_path %>
\ No newline at end of file
+<%= link_to "New inbound email by form", main_app.new_rails_conductor_inbound_email_path %> |
+<%= link_to "New inbound email by source", main_app.new_rails_conductor_inbound_email_source_path %>
diff --git a/actionmailbox/app/views/rails/conductor/action_mailbox/inbound_emails/sources/new.html.erb b/actionmailbox/app/views/rails/conductor/action_mailbox/inbound_emails/sources/new.html.erb
new file mode 100644
index 0000000000000..637efeda03155
--- /dev/null
+++ b/actionmailbox/app/views/rails/conductor/action_mailbox/inbound_emails/sources/new.html.erb
@@ -0,0 +1,12 @@
+<% provide :title, "Deliver new inbound email by source" %>
+
+<h1>Deliver new inbound email by source</h1>
+
+<%= form_with(url: main_app.rails_conductor_inbound_email_sources_path, local: true) do |form| %>
+  <div>
+    <%= form.label :source, "Source" %><br>
+    <%= form.text_area :source, size: "80x60" %>
+  </div>
+
+  <%= form.submit "Deliver inbound email" %>
+<% end %>
diff --git a/actionmailbox/config/routes.rb b/actionmailbox/config/routes.rb
index 1496d6f0b3728..9a47f02c1b4cb 100644
--- a/actionmailbox/config/routes.rb
+++ b/actionmailbox/config/routes.rb
@@ -14,6 +14,9 @@
   # TODO: Should these be mounted within the engine only?
   scope "rails/conductor/action_mailbox/", module: "rails/conductor/action_mailbox" do
     resources :inbound_emails, as: :rails_conductor_inbound_emails
+    get  "inbound_emails/sources/new", to: "inbound_emails/sources#new", as: :new_rails_conductor_inbound_email_source
+    post "inbound_emails/sources", to: "inbound_emails/sources#create", as: :rails_conductor_inbound_email_sources
+
     post ":inbound_email_id/reroute" => "reroutes#create", as: :rails_conductor_inbound_email_reroute
   end
 end
diff --git a/railties/test/application/rake/routes_test.rb b/railties/test/application/rake/routes_test.rb
index dffdae7bdec2d..70c2ea6b4990a 100644
--- a/railties/test/application/rake/routes_test.rb
+++ b/railties/test/application/rake/routes_test.rb
@@ -33,6 +33,8 @@ class RakeRoutesTest < ActiveSupport::TestCase
                                                 PATCH  /rails/conductor/action_mailbox/inbound_emails/:id(.:format)                             rails/conductor/action_mailbox/inbound_emails#update
                                                 PUT    /rails/conductor/action_mailbox/inbound_emails/:id(.:format)                             rails/conductor/action_mailbox/inbound_emails#update
                                                 DELETE /rails/conductor/action_mailbox/inbound_emails/:id(.:format)                             rails/conductor/action_mailbox/inbound_emails#destroy
+       new_rails_conductor_inbound_email_source GET    /rails/conductor/action_mailbox/inbound_emails/sources/new(.:format)                     rails/conductor/action_mailbox/inbound_emails/sources#new
+          rails_conductor_inbound_email_sources POST   /rails/conductor/action_mailbox/inbound_emails/sources(.:format)                         rails/conductor/action_mailbox/inbound_emails/sources#create
           rails_conductor_inbound_email_reroute POST   /rails/conductor/action_mailbox/:inbound_email_id/reroute(.:format)                      rails/conductor/action_mailbox/reroutes#create
                              rails_service_blob GET    /rails/active_storage/blobs/:signed_id/*filename(.:format)                               active_storage/blobs#show
                       rails_blob_representation GET    /rails/active_storage/representations/:signed_blob_id/:variation_key/*filename(.:format) active_storage/representations#show
diff --git a/railties/test/commands/routes_test.rb b/railties/test/commands/routes_test.rb
index 0ec4243de40bd..8155f5e615fdb 100644
--- a/railties/test/commands/routes_test.rb
+++ b/railties/test/commands/routes_test.rb
@@ -68,6 +68,7 @@ class Rails::Command::RoutesTest < ActiveSupport::TestCase
               rails_sendgrid_inbound_emails POST /rails/action_mailbox/sendgrid/inbound_emails(.:format)             action_mailbox/ingresses/sendgrid/inbound_emails#create
                rails_mailgun_inbound_emails POST /rails/action_mailbox/mailgun/inbound_emails/mime(.:format)         action_mailbox/ingresses/mailgun/inbound_emails#create
                                             POST /rails/conductor/action_mailbox/inbound_emails(.:format)            rails/conductor/action_mailbox/inbound_emails#create
+      rails_conductor_inbound_email_sources POST /rails/conductor/action_mailbox/inbound_emails/sources(.:format)    rails/conductor/action_mailbox/inbound_emails/sources#create
       rails_conductor_inbound_email_reroute POST /rails/conductor/action_mailbox/:inbound_email_id/reroute(.:format) rails/conductor/action_mailbox/reroutes#create
                        rails_direct_uploads POST /rails/active_storage/direct_uploads(.:format)                      active_storage/direct_uploads#create
     MESSAGE
@@ -178,6 +179,8 @@ class Rails::Command::RoutesTest < ActiveSupport::TestCase
                                             PATCH  /rails/conductor/action_mailbox/inbound_emails/:id(.:format)                             rails/conductor/action_mailbox/inbound_emails#update
                                             PUT    /rails/conductor/action_mailbox/inbound_emails/:id(.:format)                             rails/conductor/action_mailbox/inbound_emails#update
                                             DELETE /rails/conductor/action_mailbox/inbound_emails/:id(.:format)                             rails/conductor/action_mailbox/inbound_emails#destroy
+   new_rails_conductor_inbound_email_source GET    /rails/conductor/action_mailbox/inbound_emails/sources/new(.:format)                     rails/conductor/action_mailbox/inbound_emails/sources#new
+      rails_conductor_inbound_email_sources POST   /rails/conductor/action_mailbox/inbound_emails/sources(.:format)                         rails/conductor/action_mailbox/inbound_emails/sources#create
       rails_conductor_inbound_email_reroute POST   /rails/conductor/action_mailbox/:inbound_email_id/reroute(.:format)                      rails/conductor/action_mailbox/reroutes#create
                          rails_service_blob GET    /rails/active_storage/blobs/:signed_id/*filename(.:format)                               active_storage/blobs#show
                   rails_blob_representation GET    /rails/active_storage/representations/:signed_blob_id/:variation_key/*filename(.:format) active_storage/representations#show
@@ -271,31 +274,41 @@ class Rails::Command::RoutesTest < ActiveSupport::TestCase
       URI               | /rails/conductor/action_mailbox/inbound_emails/:id(.:format)
       Controller#Action | rails/conductor/action_mailbox/inbound_emails#destroy
       --[ Route 15 ]-------------
+      Prefix            | new_rails_conductor_inbound_email_source
+      Verb              | GET
+      URI               | /rails/conductor/action_mailbox/inbound_emails/sources/new(.:format)
+      Controller#Action | rails/conductor/action_mailbox/inbound_emails/sources#new
+      --[ Route 16 ]-------------
+      Prefix            | rails_conductor_inbound_email_sources
+      Verb              | POST
+      URI               | /rails/conductor/action_mailbox/inbound_emails/sources(.:format)
+      Controller#Action | rails/conductor/action_mailbox/inbound_emails/sources#create
+      --[ Route 17 ]-------------
       Prefix            | rails_conductor_inbound_email_reroute
       Verb              | POST
       URI               | /rails/conductor/action_mailbox/:inbound_email_id/reroute(.:format)
       Controller#Action | rails/conductor/action_mailbox/reroutes#create
-      --[ Route 16 ]-------------
+      --[ Route 18 ]-------------
       Prefix            | rails_service_blob
       Verb              | GET
       URI               | /rails/active_storage/blobs/:signed_id/*filename(.:format)
       Controller#Action | active_storage/blobs#show
-      --[ Route 17 ]-------------
+      --[ Route 19 ]-------------
       Prefix            | rails_blob_representation
       Verb              | GET
       URI               | /rails/active_storage/representations/:signed_blob_id/:variation_key/*filename(.:format)
       Controller#Action | active_storage/representations#show
-      --[ Route 18 ]-------------
+      --[ Route 20 ]-------------
       Prefix            | rails_disk_service
       Verb              | GET
       URI               | /rails/active_storage/disk/:encoded_key/*filename(.:format)
       Controller#Action | active_storage/disk#show
-      --[ Route 19 ]-------------
+      --[ Route 21 ]-------------
       Prefix            | update_rails_disk_service
       Verb              | PUT
       URI               | /rails/active_storage/disk/:encoded_token(.:format)
       Controller#Action | active_storage/disk#update
-      --[ Route 20 ]-------------
+      --[ Route 22 ]-------------
       Prefix            | rails_direct_uploads
       Verb              | POST
       URI               | /rails/active_storage/direct_uploads(.:format)