diff --git a/EnvelopeGenerator.Application/Contracts/IMessagingService.cs b/EnvelopeGenerator.Application/Contracts/IMessagingService.cs
new file mode 100644
index 00000000..ff84a5f5
--- /dev/null
+++ b/EnvelopeGenerator.Application/Contracts/IMessagingService.cs
@@ -0,0 +1,7 @@
+namespace EnvelopeGenerator.Application.Contracts
+{
+    public interface IMessagingService
+    {
+        public Task SendSmsAsync(string recipient, string message);
+    }
+}
\ No newline at end of file
diff --git a/EnvelopeGenerator.Application/Services/GTXMessagingService.cs b/EnvelopeGenerator.Application/Services/GTXMessagingService.cs
index c8e5090f..12208a6d 100644
--- a/EnvelopeGenerator.Application/Services/GTXMessagingService.cs
+++ b/EnvelopeGenerator.Application/Services/GTXMessagingService.cs
@@ -1,10 +1,11 @@
 using DigitalData.Core.Abstractions.Client;
 using EnvelopeGenerator.Application.Configurations.GtxMessaging;
+using EnvelopeGenerator.Application.Contracts;
 using Microsoft.Extensions.Options;
 
 namespace EnvelopeGenerator.Application.Services
 {
-    public class GtxMessagingService
+    public class GtxMessagingService : IMessagingService
     {
         private readonly IHttpClientService<SmsParams> _smsClient;