diff --git a/app/controllers/supporters_controller.rb b/app/controllers/supporters_controller.rb
index cd1c36c..621899f 100644
--- a/app/controllers/supporters_controller.rb
+++ b/app/controllers/supporters_controller.rb
@@ -8,6 +8,7 @@ class SupportersController < ApplicationController
   def create
     @supporter = Supporter.new supporter_form_params.merge(language: I18n.locale)
     if !input_to_fast? && @supporter.save
+      SupporterMailer.welcome_email(@supporter).deliver_now
       redirect_to thanks_path
     else
       flash.now[:danger] = t '.timeout' if input_to_fast?
diff --git a/app/mailers/application_mailer.rb b/app/mailers/application_mailer.rb
new file mode 100644
index 0000000..9aba772
--- /dev/null
+++ b/app/mailers/application_mailer.rb
@@ -0,0 +1,4 @@
+class ApplicationMailer < ActionMailer::Base
+  default from: 'markus@hanflegal.ch'
+  layout 'mailer'
+end
diff --git a/app/mailers/supporter_mailer.rb b/app/mailers/supporter_mailer.rb
new file mode 100644
index 0000000..faa9bf3
--- /dev/null
+++ b/app/mailers/supporter_mailer.rb
@@ -0,0 +1,6 @@
+class SupporterMailer < ApplicationMailer
+  def welcome_email(supporter)
+    @supporter = supporter
+    mail(to: @supporter.email, subject: I18n.t('welcome_email.subject'))
+  end
+end
diff --git a/app/views/layouts/mailer.slim b/app/views/layouts/mailer.slim
new file mode 100644
index 0000000..f2ac24f
--- /dev/null
+++ b/app/views/layouts/mailer.slim
@@ -0,0 +1,6 @@
+doctype html
+html
+  head
+    meta content=("text/html; charset=UTF-8") http-equiv="Content-Type" /
+  body style='padding: 20px; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;'
+    = yield
diff --git a/app/views/supporter_mailer/welcome_email.slim b/app/views/supporter_mailer/welcome_email.slim
new file mode 100644
index 0000000..000cdbd
--- /dev/null
+++ b/app/views/supporter_mailer/welcome_email.slim
@@ -0,0 +1,20 @@
+p 
+  strong Hallo #{@supporter.first_name},
+
+p Du bist nun ein Teil der Bewegung!
+
+p Wir informieren dich per E-Mail über die nächsten Schritte und kommen aktiv auf dich zu. Auf <a href="https://www.hanflegal.ch/initiative">https://www.hanflegal.ch/initiative</a> informieren wir über laufende Aktivitäten.
+
+p 
+  b Was kannst du machen?
+  
+p 
+  ul
+    li Folge uns auf Facebook <a href="https://www.facebook.com/vereinlegalizeit">Facebook</a> und <a href="https://twitter.com/VereinLegalize">Twitter</a>
+    li Teile unser Projekt in den sozialen Medien mit dem Hashtag #ch420
+    li Erzähle allen von unserem Vorhaben und bitte Sie mitzumachen
+    li Werde Mitglied beim <a href="https://www.hanflegal.ch">Verein Legalize it!</a>
+
+p 
+  | Hanfige Grüsse, 
+  em die Initianten
diff --git a/config/environments/development.rb b/config/environments/development.rb
index 0feba2e..b458e0b 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -35,4 +35,9 @@ Rails.application.configure do
 
   # Raises error for missing translations
   # config.action_view.raise_on_missing_translations = true
+
+  config.action_mailer.default_url_options = { host: 'localhost:3000' }
+
+  config.action_mailer.delivery_method = :smtp
+  config.action_mailer.smtp_settings = { address: 'localhost', port: 1025 }
 end
diff --git a/config/environments/production.rb b/config/environments/production.rb
index ff9675c..54a29b2 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -73,4 +73,17 @@ Rails.application.configure do
 
   # Use default logging formatter so that PID and timestamp are not suppressed.
   config.log_formatter = ::Logger::Formatter.new
+
+  config.action_mailer.default_url_options = { host: 'ch420.herokuapp.com' }
+
+  config.action_mailer.delivery_method = :smtp
+  config.action_mailer.smtp_settings = {
+    port:                '587',
+    address:             ENV['SMTP_HOST'],
+    user_name:           ENV['SMTP_USER'],
+    password:            ENV['SMTP_PASSWORD'],
+    domain:              'hanflegal.ch',
+    authentication:      :plain,
+    enable_starttls_auto: true
+  }
 end
diff --git a/config/locales/de.yml b/config/locales/de.yml
index a831324..746edf2 100644
--- a/config/locales/de.yml
+++ b/config/locales/de.yml
@@ -1,4 +1,7 @@
 de:
+  welcome_email:
+    subject: Besten dank für deine Unterstützung!
+  
   support_type:
     signer: Ich unterschreibe eine Volksinitiative für die <span class="text-success">Legalisierung von Cannabis</span>.
     supporter: Ich unterschreibe eine Volksinitiative für die <span class="text-success">Legalisierung von Cannabis</span> und helfe aktiv Unterschriften in meiner Umgebung zu sammeln.
diff --git a/spec/features/support_spec.rb b/spec/features/support_spec.rb
index 0e9dc6c..cdf321f 100644
--- a/spec/features/support_spec.rb
+++ b/spec/features/support_spec.rb
@@ -20,7 +20,10 @@ feature 'Support announcement' do
 
     sleep 5 # Do a real sleep to have a real integration test
 
+    expect(ActionMailer::Base.deliveries.count).to eq 0
     expect { click_button 'Unterstützung zusichern' }.to change { Supporter.count }.by(1)
+    expect(ActionMailer::Base.deliveries.count).to eq 1
+
     supporter = Supporter.find_by(email: 'blocher@blocher.ch')
     expect(supporter.coordinates).to eq [8.618589100000001, 47.2926304]
     expect(supporter.comments).to eq 'Test text'
diff --git a/spec/mailers/previews/supporter_mailer_preview.rb b/spec/mailers/previews/supporter_mailer_preview.rb
new file mode 100644
index 0000000..f8178a0
--- /dev/null
+++ b/spec/mailers/previews/supporter_mailer_preview.rb
@@ -0,0 +1,6 @@
+# Preview all emails at http://localhost:3000/rails/mailers/supporter_mailer
+class SupporterMailerPreview < ActionMailer::Preview
+  def welcome
+    SupporterMailer.welcome_email(Supporter.first)
+  end
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 16aefb5..0e2cc4a 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -44,4 +44,8 @@ RSpec.configure do |config|
   config.after(:each) do
     Mongoid.purge!
   end
+
+  config.before(:each) do
+    ActionMailer::Base.deliveries.clear
+  end
 end