diff --git a/src/core/DigitalData.MessagingService.Application/Common/Interfaces/IMessagingServiceClient.cs b/src/core/DigitalData.MessagingService.Application/Common/Interfaces/IMessagingServiceClient.cs
new file mode 100644
index 0000000..eac226f
--- /dev/null
+++ b/src/core/DigitalData.MessagingService.Application/Common/Interfaces/IMessagingServiceClient.cs
@@ -0,0 +1,19 @@
+#if NET
+using DigitalData.MessagingService.Application.EmailSending.Commands;
+
+namespace DigitalData.MessagingService.Application.Common.Interfaces;
+
+/// <summary>
+/// 
+/// </summary>
+public interface IMessagingServiceClient
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="command"></param>
+    /// <param name="cancellationToken"></param>
+    /// <returns></returns>
+    public Task<Guid> SendAsync(PublishEmailViaSmtpCommand command, CancellationToken cancellationToken = default);
+}
+#endif