diff --git a/Gemfile b/Gemfile
index b7f117f..949d68f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -38,6 +38,7 @@ end
 
 group :development do
   gem 'guard-rspec', require: false
+  gem 'letter_opener'
   gem 'listen', '~> 3.0.5'
   gem 'overcommit', require: false
   gem 'reek', require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index 4507a7c..19b5c6e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -140,6 +140,8 @@ GEM
     jwt (1.5.6)
     launchy (2.4.3)
       addressable (~> 2.3)
+    letter_opener (1.4.1)
+      launchy (~> 2.2)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
@@ -359,6 +361,7 @@ DEPENDENCIES
   jbuilder (~> 2.5)
   jquery-rails
   launchy
+  letter_opener
   listen (~> 3.0.5)
   omniauth-vkontakte
   overcommit
diff --git a/config/environments/development.rb b/config/environments/development.rb
index d9db51f..b6756e5 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -26,11 +26,10 @@
     config.cache_store = :null_store
   end
 
-  # Don't care if the mailer can't send.
-  config.action_mailer.raise_delivery_errors = false
-
-  config.action_mailer.perform_caching = false
   config.action_mailer.default_url_options = { host: 'localhost', port: 3000 }
+  config.action_mailer.delivery_method = :letter_opener
+  config.action_mailer.raise_delivery_errors = true
+  config.action_mailer.perform_caching = false
 
   # Print deprecation notices to the Rails logger.
   config.active_support.deprecation = :log