diff --git a/src/core/DigitalData.MessagingService.Application/EmailSending/Commands/GetEmailAccountQueryExtensions.cs b/src/core/DigitalData.MessagingService.Application/EmailSending/Commands/GetEmailAccountQueryExtensions.cs
index bb9c832..20ca898 100644
--- a/src/core/DigitalData.MessagingService.Application/EmailSending/Commands/GetEmailAccountQueryExtensions.cs
+++ b/src/core/DigitalData.MessagingService.Application/EmailSending/Commands/GetEmailAccountQueryExtensions.cs
@@ -5,7 +5,7 @@ namespace DigitalData.MessagingService.Application.EmailSending.Commands;
 
 public static class GetEmailAccountQueryExtensions
 {
-    public static GetEmailAccountQuery ToSender(string emailAddress)
+    public static GetEmailAccountQuery ToSender(this string emailAddress)
     {
         return new GetEmailAccountQuery
         {
diff --git a/src/presentation/DigitalData.MessagingService.Client/DigitalData.MessagingService.Client.csproj b/src/presentation/DigitalData.MessagingService.Client/DigitalData.MessagingService.Client.csproj
index d2a5af4..1568c6b 100644
--- a/src/presentation/DigitalData.MessagingService.Client/DigitalData.MessagingService.Client.csproj
+++ b/src/presentation/DigitalData.MessagingService.Client/DigitalData.MessagingService.Client.csproj
@@ -11,9 +11,9 @@
 		<PackageIcon>icon.png</PackageIcon>
 		<RepositoryUrl>http://git.dd:3000/AppStd/Rec.git</RepositoryUrl>
 		<PackageTags>digital data messaging service api client</PackageTags>
-		<Version>2.0.0</Version>
-		<AssemblyVersion>2.0.0.0</AssemblyVersion>
-		<FileVersion>2.0.0.0</FileVersion>
+		<Version>3.0.0</Version>
+		<AssemblyVersion>3.0.0.0</AssemblyVersion>
+		<FileVersion>3.0.0.0</FileVersion>
 		<Description></Description>
 		<ImplicitUsings>enable</ImplicitUsings>
 		<Nullable>enable</Nullable>
diff --git a/tests/DigitalData.MessagingService.Tests/Integration/MessagingServiceClientTests.cs b/tests/DigitalData.MessagingService.Tests/Integration/MessagingServiceClientTests.cs
index f741c67..6b74fa8 100644
--- a/tests/DigitalData.MessagingService.Tests/Integration/MessagingServiceClientTests.cs
+++ b/tests/DigitalData.MessagingService.Tests/Integration/MessagingServiceClientTests.cs
@@ -18,6 +18,7 @@ public sealed class MessagingServiceClientTests : IAsyncDisposable
 {
     private const string SenderAddress = "test-flow@digitaldata.works";
     private const string RecipientAddress = "htek0100@gmail.com";
+    private const string MessagingServiceApiBaseAddress = "http://172.24.12.39:1414";
 
     private readonly ServiceProvider _serviceProvider;
     private readonly IMessagingServiceClient _client;
@@ -59,21 +60,41 @@ public sealed class MessagingServiceClientTests : IAsyncDisposable
     {
         var subject = $"MessagingServiceClient Integration Test {Guid.NewGuid():N}";
 
-        var command = new PublishEmailViaSmtpCommand
+        var command = CreateCommand(subject);
+
+        await _client.SendAsync(command);
+
+        Assert.True(true, "Verify in mailbox.");
+    }
+
+    [Fact]
+    public async Task SendAsync_WithHttpClientDependencyInjection_PublishesExpectedMessage()
+    {
+        var services = new ServiceCollection();
+        services.AddLogging();
+        services.AddMessagingServiceHttpClient(client => client.BaseAddress = new Uri(MessagingServiceApiBaseAddress));
+
+        await using var serviceProvider = services.BuildServiceProvider();
+        var client = serviceProvider.GetRequiredService<IMessagingServiceClient>();
+
+        var subject = $"MessagingServiceHttpClient Integration Test {Guid.NewGuid():N}";
+        var command = CreateCommand(subject);
+
+        await Record.ExceptionAsync(() => client.SendAsync(command));
+
+        Assert.True(true, "Verify in mailbox.");
+    }
+
+    private static PublishEmailViaSmtpCommand CreateCommand(string subject)
+    {
+        return new PublishEmailViaSmtpCommand
         {
-            Sender = new GetEmailAccountQuery
-            {
-                Username = SenderAddress
-            },
+            Sender = SenderAddress.ToSender(),
             Recipients = [RecipientAddress],
             Subject = subject,
             Body = "<p>Realistic test mail via MessagingServiceClient.</p>",
             IsHtml = true
         };
-
-        await _client.SendAsync(command);
-
-        Assert.True(true, "Verify in mailbox.");
     }
 
     private async Task<SendingEmailEvent?> FindMessageBySubjectAsync(string subject, int maxMessages = 100)