diff --git a/Gemfile b/Gemfile
index b4bc529f6..cc43823e0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -164,6 +164,7 @@ group :development do
   gem 'rubocop-rspec-focused', require: false
   gem 'haml-lint'
   gem 'scss_lint', require: false
+  gem 'letter_opener_web'
 end
 
 group :development, :test do
diff --git a/Gemfile.lock b/Gemfile.lock
index 4e0a85aed..83bec46a6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -459,6 +459,12 @@ GEM
     leaflet-markercluster-rails (0.7.0)
       railties (>= 3.1)
     leaflet-rails (0.7.7)
+    letter_opener (1.6.0)
+      launchy (~> 2.2)
+    letter_opener_web (1.3.4)
+      actionmailer (>= 3.2)
+      letter_opener (~> 1.0)
+      railties (>= 3.2)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
@@ -855,6 +861,7 @@ DEPENDENCIES
   leaflet-draw-rails
   leaflet-markercluster-rails (~> 0.7.0)
   leaflet-rails
+  letter_opener_web
   lograge
   logstash-event
   mailjet
@@ -906,4 +913,4 @@ DEPENDENCIES
   zxcvbn-ruby
 
 BUNDLED WITH
-   1.16.4
+   1.16.5
diff --git a/Procfile b/Procfile
index 6047f41fa..56e81cebf 100644
--- a/Procfile
+++ b/Procfile
@@ -1,3 +1,2 @@
 server: bin/rails server
 jobs: bin/delayed_job run
-mails: mailcatcher -f
diff --git a/bin/setup b/bin/setup
index 86ae494c9..3d592bcd5 100755
--- a/bin/setup
+++ b/bin/setup
@@ -13,9 +13,6 @@ chdir APP_ROOT do
   # This script is a starting point to setup your application.
   # Add necessary setup steps to this file.
 
-  puts '== Installing global tools =='
-  system! 'gem install mailcatcher --conservative'
-
   puts "\n== Installing dependencies =="
   system! 'gem install bundler --conservative'
   system('bundle check') || system!('bundle install')
diff --git a/config/environments/development.rb b/config/environments/development.rb
index e906943f1..f600e1bba 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -45,17 +45,11 @@ Rails.application.configure do
   config.assets.raise_runtime_errors = true
 
   # Action Mailer settings
-  config.action_mailer.delivery_method = :smtp
-  config.action_mailer.default_url_options = { host: 'localhost', port: 3000 }
-  # Config for mailcatcher https://mailcatcher.me/
-  config.action_mailer.smtp_settings = {
-    address: 'localhost',
-    port: 1025,
-    locale: 'fr'
-  }
+  config.action_mailer.delivery_method = :letter_opener_web
 
   Rails.application.routes.default_url_options = {
-    host: 'localhost:3000'
+    host: 'localhost',
+    port: 3000
   }
 
   # Raises error for missing translations
diff --git a/config/routes.rb b/config/routes.rb
index d61486811..e939134a9 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -45,6 +45,14 @@ Rails.application.routes.draw do
     root to: "administrateurs#index"
   end
 
+  #
+  # Letter Opener
+  #
+
+  if Rails.env.development?
+    mount LetterOpenerWeb::Engine, at: "/letter_opener"
+  end
+
   #
   # Monitoring
   #