diff --git a/.env.example b/.env.example
index 89da072..9433ef6 100644
--- a/.env.example
+++ b/.env.example
@@ -5,7 +5,8 @@
 #   APP_DOMAIN should be something like compliments.dev
 #   EMAIL_WHITELIST should be the email domain name
 #
-# Don't include the port in this domain setting.
+# Don't include the port, protocol or trailing slash in this domain setting.
+# Example: pluralsight.com
 APP_DOMAIN=
 EMAIL_WHITELIST=
 
diff --git a/config/environments/development.rb b/config/environments/development.rb
index 3ed29d4..d7e69f4 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -41,5 +41,5 @@
 
   config.action_mailer.delivery_method = :smtp
   config.action_mailer.smtp_settings = { :address => "localhost", :port => 1025 }
-  config.action_mailer.default_url_options = { host: ENV.fetch("APP_DOMAIN") }
+  config.action_mailer.default_url_options = { host: "http://#{ENV.fetch('APP_DOMAIN')}" }
 end
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 385d5c4..0de2d70 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -87,5 +87,5 @@
     :enable_starttls_auto => true
   }
 
-  config.action_mailer.default_url_options = { host: ENV.fetch("APP_DOMAIN") }
+  config.action_mailer.default_url_options = { host: "http://#{ENV.fetch('APP_DOMAIN')}" }
 end
diff --git a/config/initializers/session_store.rb b/config/initializers/session_store.rb
index 3da6b1d..c535494 100644
--- a/config/initializers/session_store.rb
+++ b/config/initializers/session_store.rb
@@ -1,2 +1,2 @@
 # Be sure to restart your server when you modify this file.
-Rails.application.config.session_store :cookie_store, key: '_compliments_session', domain: ENV["APP_DOMAIN"].sub("http://", "").sub("/","")
+Rails.application.config.session_store :cookie_store, key: '_compliments_session', domain: ENV["APP_DOMAIN"]