diff --git a/.env-example b/.env-example
index 13136aa..e139f7d 100644
--- a/.env-example
+++ b/.env-example
@@ -6,21 +6,31 @@ VONAGE_APPLICATION_PRIVATE_KEY_PATH=private.key
 TO_NUMBER=
 VONAGE_NUMBER=
 
-# For Facebook messaging
+# Vonage Messages API variables
+
+## For Messages Sandbox
+MESSAGES_SANDBOX_URL=
+MESSAGES_SANDBOX_WHATSAPP_NUMBER=
+MESSAGES_SANDBOX_ALLOW_LISTED_TO_NUMBER=
+MESSAGES_SANDBOX_FB_ID=
+MESSAGES_SANDBOX_ALLOW_LISTED_FB_RECIPIENT_ID=
+MESSAGES_SANDBOX_VIBER_SERVICE_ID=
+
+## For Facebook messaging
 FB_SENDER_ID=
 FB_RECIPIENT_ID=
 
-# For Viber messaging
+## For Viber messaging
 VIBER_SERVICE_MESSAGE_ID=
 
-# For WhatsApp messaging
+## For WhatsApp messaging
 WHATSAPP_NUMBER=
 WHATSAPP_TEMPLATE_NAMESPACE=
 WHATSAPP_TEMPLATE_NAME=
 WHATSAPP_AUTH_TEMPLATE_NAME=
 WHATSAPP_TEMPLATE_REPLACEMENT_TEXT=
 
-# For media messaging (WhatsApp, Messenger, Viber)
+## For media messaging (WhatsApp, Messenger, Viber)
 IMAGE_URL=
 IMAGE_CAPTION=
 FILE_URL=
diff --git a/messages/sandbox/messenger/send-text.rb b/messages/sandbox/messenger/send-text.rb
new file mode 100644
index 0000000..df95ebd
--- /dev/null
+++ b/messages/sandbox/messenger/send-text.rb
@@ -0,0 +1,25 @@
+require 'dotenv/load'
+require 'vonage'
+
+VONAGE_APPLICATION_ID = ENV['VONAGE_APPLICATION_ID']
+VONAGE_APPLICATION_PRIVATE_KEY_PATH = ENV['VONAGE_APPLICATION_PRIVATE_KEY_PATH']
+MESSAGES_SANDBOX_URL= ENV['MESSAGES_SANDBOX_URL']
+MESSAGES_SANDBOX_FB_ID = ENV['MESSAGES_SANDBOX_FB_ID']
+MESSAGES_SANDBOX_ALLOW_LISTED_FB_RECIPIENT_ID = ENV['MESSAGES_SANDBOX_ALLOW_LISTED_FB_RECIPIENT_ID']
+
+client = Vonage::Client.new(
+  application_id: VONAGE_APPLICATION_ID,
+  private_key: File.read(VONAGE_APPLICATION_PRIVATE_KEY_PATH),
+  api_host: MESSAGES_SANDBOX_URL
+)
+
+message = Vonage::Messaging::Message.messenger(
+  type: 'text',
+  message: "This is a Facebook Messenger text message sent using the Messages API via the Messages Sandbox"
+)
+
+client.messaging.send(
+  from: MESSAGES_SANDBOX_FB_ID,
+  to: MESSAGES_SANDBOX_ALLOW_LISTED_FB_RECIPIENT_ID,
+  **message
+)
diff --git a/messages/sandbox/viber/send-text.rb b/messages/sandbox/viber/send-text.rb
new file mode 100644
index 0000000..65d4bad
--- /dev/null
+++ b/messages/sandbox/viber/send-text.rb
@@ -0,0 +1,25 @@
+require 'dotenv/load'
+require 'vonage'
+
+VONAGE_APPLICATION_ID = ENV['VONAGE_APPLICATION_ID']
+VONAGE_APPLICATION_PRIVATE_KEY_PATH = ENV['VONAGE_APPLICATION_PRIVATE_KEY_PATH']
+MESSAGES_SANDBOX_URL= ENV['MESSAGES_SANDBOX_URL']
+MESSAGES_SANDBOX_VIBER_SERVICE_ID = ENV['MESSAGES_SANDBOX_VIBER_SERVICE_ID']
+MESSAGES_SANDBOX_ALLOW_LISTED_TO_NUMBER = ENV['MESSAGES_SANDBOX_ALLOW_LISTED_TO_NUMBER']
+
+client = Vonage::Client.new(
+  application_id: VONAGE_APPLICATION_ID,
+  private_key: File.read(VONAGE_APPLICATION_PRIVATE_KEY_PATH),
+  api_host: MESSAGES_SANDBOX_URL
+)
+
+message = Vonage::Messaging::Message.viber(
+  type: 'text',
+  message: "This is a Viber Service Message text message sent using the Messages API via the Messages Sandbox"
+)
+
+client.messaging.send(
+  from: MESSAGES_SANDBOX_VIBER_SERVICE_ID,
+  to: MESSAGES_SANDBOX_ALLOW_LISTED_TO_NUMBER,
+  **message
+)
diff --git a/messages/sandbox/whatsapp/send-text.rb b/messages/sandbox/whatsapp/send-text.rb
new file mode 100644
index 0000000..ae815de
--- /dev/null
+++ b/messages/sandbox/whatsapp/send-text.rb
@@ -0,0 +1,25 @@
+require 'dotenv/load'
+require 'vonage'
+
+VONAGE_APPLICATION_ID = ENV['VONAGE_APPLICATION_ID']
+VONAGE_APPLICATION_PRIVATE_KEY_PATH = ENV['VONAGE_APPLICATION_PRIVATE_KEY_PATH']
+MESSAGES_SANDBOX_URL= ENV['MESSAGES_SANDBOX_URL']
+MESSAGES_SANDBOX_WHATSAPP_NUMBER = ENV['MESSAGES_SANDBOX_WHATSAPP_NUMBER']
+MESSAGES_SANDBOX_ALLOW_LISTED_TO_NUMBER = ENV['MESSAGES_SANDBOX_ALLOW_LISTED_TO_NUMBER']
+
+client = Vonage::Client.new(
+  application_id: VONAGE_APPLICATION_ID,
+  private_key: File.read(VONAGE_APPLICATION_PRIVATE_KEY_PATH),
+  api_host: MESSAGES_SANDBOX_URL
+)
+
+message = Vonage::Messaging::Message.whatsapp(
+  type: 'text',
+  message: "This is a WhatsApp Message text message sent using the Messages API via the Messages Sandbox"
+)
+
+client.messaging.send(
+  from: MESSAGES_SANDBOX_WHATSAPP_NUMBER,
+  to: MESSAGES_SANDBOX_ALLOW_LISTED_TO_NUMBER,
+  **message
+)