diff --git a/app/assets/javascripts/admin/enterprises/controllers/enterprise_controller.js.coffee b/app/assets/javascripts/admin/enterprises/controllers/enterprise_controller.js.coffee
index 7d1935010e..2d1dc494f4 100644
--- a/app/assets/javascripts/admin/enterprises/controllers/enterprise_controller.js.coffee
+++ b/app/assets/javascripts/admin/enterprises/controllers/enterprise_controller.js.coffee
@@ -1,5 +1,5 @@
 angular.module("admin.enterprises")
-  .controller "enterpriseCtrl", ($scope, $window, NavigationCheck, enterprise, EnterprisePaymentMethods, EnterpriseShippingMethods, SideMenu, StatusMessage) ->
+  .controller "enterpriseCtrl", ($scope, $http, $window, NavigationCheck, enterprise, EnterprisePaymentMethods, EnterpriseShippingMethods, SideMenu, StatusMessage) ->
     $scope.Enterprise = enterprise
     $scope.PaymentMethods = EnterprisePaymentMethods.paymentMethods
     $scope.ShippingMethods = EnterpriseShippingMethods.shippingMethods
@@ -26,7 +26,7 @@ angular.module("admin.enterprises")
     # from a directive "nav-check" in the page - if we pass it here it will be called in the test suite,
     # and on all new uses of this contoller, and we might not want that.
     enterpriseNavCallback = ->
-      if $scope.enterprise_form.$dirty
+      if $scope.enterprise_form != undefined && $scope.enterprise_form.$dirty
         t('admin.unsaved_confirm_leave')
 
     # Register the NavigationCheck callback
@@ -51,3 +51,16 @@ angular.module("admin.enterprises")
           $scope.enterprise_form?.$setDirty()
         else
           alert ("#{manager.email}" + " " + t("is_already_manager"))
+
+    $scope.inviteManager = ->
+      $scope.invite_errors = $scope.invite_success = null
+      email = $scope.newUser
+
+      $http.post("/admin/manager_invitations", {email: email, enterprise_id: $scope.Enterprise.id}).success (data)->
+          $scope.addManager({id: data.user, email: email})
+          $scope.invite_success = t('user_invited', email: email)
+        .error (data) ->
+          $scope.invite_errors = data.errors
+
+    $scope.resetModal = ->
+      $scope.newUser = $scope.invite_errors = $scope.invite_success = null
diff --git a/app/assets/javascripts/templates/admin/modals/invite_manager.html.haml b/app/assets/javascripts/templates/admin/modals/invite_manager.html.haml
new file mode 100644
index 0000000000..bbde3baa49
--- /dev/null
+++ b/app/assets/javascripts/templates/admin/modals/invite_manager.html.haml
@@ -0,0 +1,19 @@
+#invite-manager-modal{ng: {app: 'admin.enterprises', controller: 'enterpriseCtrl'}}
+
+  .margin-bottom-30.text-center
+    .text-big
+      = t('js.admin.modals.invite_title')
+
+  %p.alert-box.ok{ng: {show: 'invite_success'}}
+    {{invite_success}}
+
+  %p.alert-box.error{ng: {show: 'invite_errors'}}
+    {{invite_errors}}
+
+  %input#invite_email.fullwidth.margin-bottom-20{ng: {model: 'newUser'}}
+
+  .margin-bottom-20.text-center
+    %button.text-center.margin-top-10{ng: {show: '!invite_success', click: 'inviteManager()'}}
+      = t('js.admin.modals.invite')
+    %button.text-center.margin-top-10{ng: {show: 'invite_success', click: 'resetModal(); close()'}}
+      = t('js.admin.modals.close')
diff --git a/app/assets/stylesheets/admin/openfoodnetwork.css.scss b/app/assets/stylesheets/admin/openfoodnetwork.css.scss
index 9a970c87d4..d10ca748d0 100644
--- a/app/assets/stylesheets/admin/openfoodnetwork.css.scss
+++ b/app/assets/stylesheets/admin/openfoodnetwork.css.scss
@@ -1,3 +1,7 @@
+input[type="submit"], input[type="button"], button, .button {
+  cursor: pointer;
+}
+
 .text-center {
   text-align: center;
 }
diff --git a/app/controllers/admin/manager_invitations_controller.rb b/app/controllers/admin/manager_invitations_controller.rb
new file mode 100644
index 0000000000..ed70322f34
--- /dev/null
+++ b/app/controllers/admin/manager_invitations_controller.rb
@@ -0,0 +1,39 @@
+module Admin
+  class ManagerInvitationsController < Spree::Admin::BaseController
+    def create
+      @email = params[:email]
+      @enterprise = Enterprise.find(params[:enterprise_id])
+
+      authorize! :edit, @enterprise
+
+      existing_user = Spree::User.find_by_email(@email)
+
+      if existing_user
+        render json: { errors: t('admin.enterprises.invite_manager.user_already_exists') }, status: :unprocessable_entity
+        return
+      end
+
+      new_user = create_new_manager
+
+      if new_user
+        render json: { user: new_user.id }, status: :ok
+      else
+        render json: { errors: t('admin.enterprises.invite_manager.error') }, status: 500
+      end
+    end
+
+    private
+
+    def create_new_manager
+      password = Devise.friendly_token
+      new_user = Spree::User.create(email: @email, unconfirmed_email: @email, password: password)
+      new_user.reset_password_token = Devise.friendly_token
+      new_user.save!
+
+      @enterprise.users << new_user
+      Delayed::Job.enqueue ManagerInvitationJob.new(@enterprise.id, new_user.id)
+
+      new_user
+    end
+  end
+end
diff --git a/app/controllers/user_confirmations_controller.rb b/app/controllers/user_confirmations_controller.rb
index f5ee6a10e5..8e3e504eaa 100644
--- a/app/controllers/user_confirmations_controller.rb
+++ b/app/controllers/user_confirmations_controller.rb
@@ -38,6 +38,10 @@ class UserConfirmationsController < DeviseController
         'not_confirmed'
       end
 
+    if resource.reset_password_token.present?
+      return spree.edit_spree_user_password_path(reset_password_token: resource.reset_password_token)
+    end
+
     path = (session[:confirmation_return_url] || login_path).to_s
     path += path.include?('?') ? '&' : '?'
     path + "validation=#{result}"
diff --git a/app/jobs/manager_invitation_job.rb b/app/jobs/manager_invitation_job.rb
new file mode 100644
index 0000000000..5a1e894f0e
--- /dev/null
+++ b/app/jobs/manager_invitation_job.rb
@@ -0,0 +1,7 @@
+ManagerInvitationJob = Struct.new(:enterprise_id, :user_id) do
+  def perform
+    enterprise = Enterprise.find enterprise_id
+    user = Spree::User.find user_id
+    EnterpriseMailer.manager_invitation(enterprise, user).deliver
+  end
+end
diff --git a/app/mailers/enterprise_mailer.rb b/app/mailers/enterprise_mailer.rb
index 350a247d73..03d9279c93 100644
--- a/app/mailers/enterprise_mailer.rb
+++ b/app/mailers/enterprise_mailer.rb
@@ -12,6 +12,18 @@ class EnterpriseMailer < Spree::BaseMailer
          :subject => subject)
   end
 
+  def manager_invitation(enterprise, user)
+    @enterprise = enterprise
+    @instance = Spree::Config[:site_name]
+    @instance_email = from_address
+
+    subject = t('enterprise_mailer.invite_manager.subject', enterprise: @enterprise.name)
+
+    mail(to: user.email,
+         from: from_address,
+         subject: subject)
+  end
+
   private
 
   def find_enterprise(enterprise)
diff --git a/app/views/admin/enterprises/form/_users.html.haml b/app/views/admin/enterprises/form/_users.html.haml
index 35db6bea9d..adc6d4ba67 100644
--- a/app/views/admin/enterprises/form/_users.html.haml
+++ b/app/views/admin/enterprises/form/_users.html.haml
@@ -60,3 +60,16 @@
       - @enterprise.users.each do |manager|
         = manager.email
         %br
+
+- if full_permissions
+  %form
+    .row
+      .three.columns.alpha
+        %label
+          = t('.invite_manager')
+        %div{'ofn-with-tip' => t('.invite_manager_tip')}
+          %a= t('admin.whats_this')
+      .eight.columns.omega
+        .row
+          %a.button.help-modal{template: 'admin/modals/invite_manager.html'}
+            = t('.add_unregistered_user')
diff --git a/app/views/enterprise_mailer/manager_invitation.html.haml b/app/views/enterprise_mailer/manager_invitation.html.haml
new file mode 100644
index 0000000000..e7256b47c9
--- /dev/null
+++ b/app/views/enterprise_mailer/manager_invitation.html.haml
@@ -0,0 +1,16 @@
+%h3
+  = t('invite_email.greeting')
+%p.lead
+  = t('invite_email.invited_to_manage', enterprise: @enterprise.name, instance: @instance)
+
+%p
+  = t('invite_email.confirm_your_email')
+%p
+  = t('invite_email.mistakenly_sent', owner_email: @enterprise.owner.email, instance: @instance, instance_email: @instance_email)
+
+%p
+  = t :email_help
+
+= render 'shared/mailers/signoff'
+
+= render 'shared/mailers/social_and_contact'
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 115769c326..1f817071ee 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -114,6 +114,8 @@ en:
       subject: "Please confirm the email address for %{enterprise}"
     welcome:
       subject: "%{enterprise} is now on %{sitename}"
+    invite_manager:
+      subject: "%{enterprise} has invited you to be a manager"
   producer_mailer:
     order_cycle:
       subject: "Order cycle report for %{producer}"
@@ -665,6 +667,9 @@ en:
           notifications_note: 'Note: A new email address may need to be confirmed prior to use'
           managers: Managers
           managers_tip: The other users with permission to manage this enterprise.
+          invite_manager: "Invite Manager"
+          invite_manager_tip: "Invite an unregistered user to sign up and become a manager of this enterprise."
+          add_unregistered_user: "Add an unregistered user"
           email_confirmed: "Email confirmed"
           email_not_confirmed: "Email not confirmed"
       actions:
@@ -724,6 +729,9 @@ en:
         welcome_text: You have successfully created a
         next_step: Next step
         choose_starting_point: 'Choose your starting point:'
+      invite_manager:
+        user_already_exists: "User already exists"
+        error: "Something went wrong"
     order_cycles:
       edit:
         advanced_settings: Advanced Settings
@@ -1319,6 +1327,13 @@ See the %{link} to find out more about %{sitename}'s features and to start using
   If you are a producer or food enterprise, we are excited to have you as a part of the network."
   email_signup_help_html: "We welcome all your questions and feedback; you can use the <em>Send Feedback</em> button on the site or email us at %{email}"
 
+  invite_email:
+    greeting: "Hello!"
+    invited_to_manage: "You have been invited to manage %{enterprise} on %{instance}."
+    confirm_your_email: "You will receive an email shortly to confirm your registration."
+    set_a_password: "You will then be prompted to set a password before you are able to administer the enterprise."
+    mistakenly_sent: "Not sure why you have received this email? Please contact %{owner_email} for more information, or you can contact %{instance} at %{instance_email}."
+
   producer_mail_greeting: "Dear"
   producer_mail_text_before: "We now have all the consumer orders for the next food drop."
   producer_mail_order_text: "Here is a summary of the orders for your products:"
@@ -2133,10 +2148,10 @@ See the %{link} to find out more about %{sitename}'s features and to start using
   unsaved_changes_confirmation: "Unsaved changes will be lost. Continue anyway?"
   one_product_unsaved: "Changes to one product remain unsaved."
   products_unsaved: "Changes to %{n} products remain unsaved."
-  add_manager: "Add a manager"
   is_already_manager: "is already a manager!"
   no_change_to_save: " No change to save"
-  add_manager: "Add a manager"
+  user_invited: "%{email} has been invited to manage this enterprise"
+  add_manager: "Add an existing user"
   users:  "Users"
   about: "About"
   images: "Images"
@@ -2219,6 +2234,9 @@ See the %{link} to find out more about %{sitename}'s features and to start using
       enterprise_limit_reached: "You have reached the standard limit of enterprises per account. Write to %{contact_email} if you need to increase it."
       modals:
         got_it: Got it
+        close: "Close"
+        invite: "Invite"
+        invite_title: "Invite an unregistered user"
         tag_rule_help:
           title: Tag Rules
           overview: Overview
diff --git a/config/routes.rb b/config/routes.rb
index 9d79e32300..2062a1d60f 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -113,6 +113,8 @@ Openfoodnetwork::Application.routes.draw do
       resources :tag_rules, only: [:destroy]
     end
 
+    resources :manager_invitations, only: [:create]
+
     resources :enterprise_relationships
     resources :enterprise_roles
 
diff --git a/spec/controllers/admin/manager_invitations_controller_spec.rb b/spec/controllers/admin/manager_invitations_controller_spec.rb
new file mode 100644
index 0000000000..01b7c984d1
--- /dev/null
+++ b/spec/controllers/admin/manager_invitations_controller_spec.rb
@@ -0,0 +1,42 @@
+require 'spec_helper'
+
+module Admin
+  describe ManagerInvitationsController, type: :controller do
+    let!(:existing_user) { create(:user) }
+    let!(:enterprise) { create(:enterprise) }
+    let(:admin) { create(:admin_user) }
+
+    describe "#create" do
+      context "when given email matches an existing user" do
+        before do
+          controller.stub spree_current_user: admin
+        end
+
+        it "returns an error" do
+          spree_post :create, {email: existing_user.email, enterprise_id: enterprise.id}
+
+          expect(response.status).to eq 422
+          expect(json_response['errors']).to eq I18n.t('admin.enterprises.invite_manager.user_already_exists')
+        end
+      end
+
+      context "signing up a new user" do
+        before do
+          controller.stub spree_current_user: admin
+        end
+
+        it "creates a new user, sends an invitation email, and returns the user id" do
+          expect do
+            spree_post :create, {email: 'un.registered@email.com', enterprise_id: enterprise.id}
+          end.to enqueue_job Delayed::PerformableMethod
+
+          new_user = Spree::User.find_by_email('un.registered@email.com')
+
+          expect(new_user.reset_password_token).to_not be_nil
+          expect(response.status).to eq 200
+          expect(json_response['user']).to eq new_user.id
+        end
+      end
+    end
+  end
+end
diff --git a/spec/controllers/user_confirmations_controller_spec.rb b/spec/controllers/user_confirmations_controller_spec.rb
index d264a011a0..678e7ccd86 100644
--- a/spec/controllers/user_confirmations_controller_spec.rb
+++ b/spec/controllers/user_confirmations_controller_spec.rb
@@ -25,17 +25,17 @@ describe UserConfirmationsController, type: :controller do
     end
 
     context "that has not been confirmed" do
-      it "redirects the user to login" do
-        spree_get :show, confirmation_token: unconfirmed_user.confirmation_token
-        expect(response).to redirect_to login_path(validation: 'confirmed')
-      end
-
       it "confirms the user" do
         spree_get :show, confirmation_token: unconfirmed_user.confirmation_token
         expect(unconfirmed_user.reload.confirmed_at).not_to eq(nil)
       end
 
-      it "redirects to previous url" do
+      it "redirects the user to #/login by default" do
+        spree_get :show, confirmation_token: unconfirmed_user.confirmation_token
+        expect(response).to redirect_to login_path(validation: 'confirmed')
+      end
+
+      it "redirects to previous url, if present" do
         session[:confirmation_return_url] = producers_path + '#/login'
         spree_get :show, confirmation_token: unconfirmed_user.confirmation_token
         expect(response).to redirect_to producers_path + '#/login?validation=confirmed'
@@ -46,6 +46,13 @@ describe UserConfirmationsController, type: :controller do
         spree_get :show, confirmation_token: unconfirmed_user.confirmation_token
         expect(response).to redirect_to registration_path + '#/signup?after_login=%2Fregister&validation=confirmed'
       end
+
+      it "redirects to set password page, if user needs to reset their password" do
+        unconfirmed_user.reset_password_token = Devise.friendly_token
+        unconfirmed_user.save!
+        spree_get :show, confirmation_token: unconfirmed_user.confirmation_token
+        expect(response).to redirect_to spree.edit_spree_user_password_path(reset_password_token: unconfirmed_user.reset_password_token)
+      end
     end
   end
 
diff --git a/spec/features/admin/enterprise_roles_spec.rb b/spec/features/admin/enterprise_roles_spec.rb
index ee036b9d27..5029a8b054 100644
--- a/spec/features/admin/enterprise_roles_spec.rb
+++ b/spec/features/admin/enterprise_roles_spec.rb
@@ -83,6 +83,7 @@ feature %q{
       let!(:user1) { create(:user, email: 'user1@example.com') }
       let!(:user2) { create(:user, email: 'user2@example.com') }
       let!(:user3) { create(:user, email: 'user3@example.com', confirmed_at: nil) }
+      let(:new_email) { 'new@manager.com' }
 
       let!(:enterprise) { create(:enterprise, name: 'Test Enterprise', owner: user1) }
       let!(:enterprise_role) { create(:enterprise_role, user_id: user2.id, enterprise_id: enterprise.id) }
@@ -114,7 +115,9 @@ feature %q{
 
           # user3 has been added and has an unconfirmed email address
           expect(page).to have_css "tr#manager-#{user3.id}"
-          expect(page).to have_css 'i.unconfirmed'
+          within "tr#manager-#{user3.id}" do
+            expect(page).to have_css 'i.unconfirmed'
+          end
         end
       end
 
@@ -133,6 +136,29 @@ feature %q{
           end
         end
       end
+
+      it "can invite unregistered users to be managers" do
+        find('a.button.help-modal').click
+        expect(page).to have_css '#invite-manager-modal'
+
+        within '#invite-manager-modal' do
+          fill_in 'invite_email', with: new_email
+          click_button I18n.t('js.admin.modals.invite')
+          expect(page).to have_content I18n.t('user_invited', email: new_email)
+          click_button I18n.t('js.admin.modals.close')
+        end
+
+        new_user = Spree::User.find_by_email_and_confirmed_at(new_email, nil)
+        expect(Enterprise.managed_by(new_user)).to include enterprise
+
+        within 'table.managers' do
+          expect(page).to have_content new_email
+
+          within "tr#manager-#{new_user.id}" do
+            expect(page).to have_css 'i.unconfirmed'
+          end
+        end
+      end
     end
   end
 
diff --git a/spec/mailers/enterprise_mailer_spec.rb b/spec/mailers/enterprise_mailer_spec.rb
index bac747860f..a31a9ec0e2 100644
--- a/spec/mailers/enterprise_mailer_spec.rb
+++ b/spec/mailers/enterprise_mailer_spec.rb
@@ -2,17 +2,29 @@ require 'spec_helper'
 
 describe EnterpriseMailer do
   let!(:enterprise) { create(:enterprise) }
+  let!(:user) { create(:user) }
 
   before do
     ActionMailer::Base.deliveries = []
     Spree::MailMethod.create!(environment: 'test')
   end
 
-  it "sends a welcome email when given an enterprise" do
+  describe "#welcome" do
+    it "sends a welcome email when given an enterprise" do
     EnterpriseMailer.welcome(enterprise).deliver
 
     mail = ActionMailer::Base.deliveries.first
     expect(mail.subject)
       .to eq "#{enterprise.name} is now on #{Spree::Config[:site_name]}"
+    end
+  end
+
+  describe "#manager_invitation" do
+    it "should send a manager invitation email when given an enterprise and user" do
+      EnterpriseMailer.manager_invitation(enterprise, user).deliver
+      expect(ActionMailer::Base.deliveries.count).to eq 1
+      mail = ActionMailer::Base.deliveries.first
+      expect(mail.subject).to eq "#{enterprise.name} has invited you to be a manager"
+    end
   end
 end