diff --git a/.forgejo/workflows/buildAndTest.yml b/.forgejo/workflows/buildAndTest.yml
index cb18656d..ea58d2fe 100644
--- a/.forgejo/workflows/buildAndTest.yml
+++ b/.forgejo/workflows/buildAndTest.yml
@@ -44,4 +44,8 @@ jobs:
     - name: Test
       run: |
         echo "🚀 Lancement des tests..."
-        cd /src/_src && dotnet test --verbosity normal && echo "✅ Success !" || echo "❌ Fail ($?)!"
+        cd /src/_src && dotnet test \
+          --verbosity normal \
+          --filter="Category!=Platform-Android" \
+          --logger "xunit;LogFileName=test-results.xml" \
+          && echo "✅ Success !" || echo "❌ Fail ($?)!"
diff --git a/.github/workflows/docker-publish-backend.yml b/.github/workflows/docker-publish-backend.yml
index 6c2431ae..d8466bdb 100644
--- a/.github/workflows/docker-publish-backend.yml
+++ b/.github/workflows/docker-publish-backend.yml
@@ -26,7 +26,7 @@ jobs:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
       - name: Test
-        run: dotnet test --no-build --verbosity normal
+        run: dotnet test --no-build --verbosity normal --filter="Category!=Platform-Android"
       # 4. Build et Push de l'image de production finale
       - name: Build and push production image
         uses: docker/build-push-action@v7
diff --git a/src/PostIt/PostIt.Tests/AndroidAppLaunchTests.cs b/src/PostIt/PostIt.Tests/AndroidAppLaunchTests.cs
index d4980d26..25630c83 100644
--- a/src/PostIt/PostIt.Tests/AndroidAppLaunchTests.cs
+++ b/src/PostIt/PostIt.Tests/AndroidAppLaunchTests.cs
@@ -12,6 +12,7 @@ namespace PostIt.Tests;
 /// Skip conditions: the package is not installed on the connected device,
 /// or no device is connected via adb.
 /// </summary>
+[Trait("Category", "Platform-Android")]
 public class AndroidAppLaunchTests
 {
     private const string PackageName = "fr.pschneider.postit";
@@ -23,8 +24,8 @@ public class AndroidAppLaunchTests
         _output = output;
     }
 
-    // https://twosixtech.com/blog/integrating-docker-and-adb/
-    // FIXME ala hosted shared resource adb server - [Fact]
+    // TODO https://twosixtech.com/blog/integrating-docker-and-adb/
+    [Fact]
     public void PostIt_starts_and_draws_a_first_frame_on_the_emulator()
     {
         if (!IsPackageInstalledOnAnyDevice())
diff --git a/src/Yavsc.Abstract/Authentication/RegisterModel.cs b/src/Yavsc.Abstract/Authentication/RegisterModel.cs
index 2ebb3297..3bf9876b 100644
--- a/src/Yavsc.Abstract/Authentication/RegisterModel.cs
+++ b/src/Yavsc.Abstract/Authentication/RegisterModel.cs
@@ -12,8 +12,8 @@ namespace Yavsc.ViewModels.Account
         public string UserName { get; set; }
 
         [Required()]
-        [StringLength( maximumLength:102, MinimumLength = 5)]
-   //    [EmailAddress]
+        [StringLength(maximumLength: 102, MinimumLength = 5)]
+        [EmailAddress(ErrorMessage = "L'adresse e-mail n'est pas valide.")]
         [Display(Name = "Email", Description = "E-Mail")]
         public string Email { get; set; }
 
diff --git a/src/Yavsc.Org.Tests/NonRegression/EMailling.cs b/src/Yavsc.Org.Tests/NonRegression/EMailling.cs
index 5b1b33e9..d5599842 100644
--- a/src/Yavsc.Org.Tests/NonRegression/EMailling.cs
+++ b/src/Yavsc.Org.Tests/NonRegression/EMailling.cs
@@ -1,8 +1,10 @@
+using System.ComponentModel.DataAnnotations;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Yavsc.Interface;
 using Yavsc.Interfaces;
 using Yavsc.Org.Tests.Fakes;
+using Yavsc.ViewModels.Account;
 
 namespace Yavsc.Org.Tests
 {
@@ -56,5 +58,27 @@ namespace Yavsc.Org.Tests
             Assert.Equal(_serverFixture.SiteSettings.Owner.EMail, client.LastSentMessage?.To.Mailboxes.First().Address);
         }
 
+        [Fact]
+        public void RegisterModel_rejects_invalid_email_format()
+        {
+            var model = new RegisterModel
+            {
+                UserName = "alice",
+                Email = "this is not an email",
+                Password = "Password123!",
+                ConfirmPassword = "Password123!"
+            };
+
+            var results = new List<ValidationResult>();
+            var valid = Validator.TryValidateObject(
+                model,
+                new ValidationContext(model),
+                results,
+                validateAllProperties: true);
+
+            Assert.False(valid);
+            Assert.Contains(results, r => r.MemberNames.Contains(nameof(RegisterModel.Email)));
+        }
+
     }
 }
diff --git a/src/Yavsc.Org/Controllers/Accounting/AccountController.cs b/src/Yavsc.Org/Controllers/Accounting/AccountController.cs
index c562736d..05cb55b5 100644
--- a/src/Yavsc.Org/Controllers/Accounting/AccountController.cs
+++ b/src/Yavsc.Org/Controllers/Accounting/AccountController.cs
@@ -564,6 +564,8 @@ IHtmlLocalizerFactory htmlLocalizerFactory,
         [ValidateAntiForgeryToken]
         public async Task<IActionResult> Register(RegisterModel model)
         {
+            model.Email = model.Email?.Trim();
+
             if (ModelState.IsValid)
             {
                 var user = new ApplicationUser { UserName = model.UserName, Email = model.Email };