diff --git a/app/api/routes-b/email-suppressions/[id]/route.ts b/app/api/routes-b/email-suppressions/[id]/route.ts
new file mode 100644
index 00000000..85cab3cf
--- /dev/null
+++ b/app/api/routes-b/email-suppressions/[id]/route.ts
@@ -0,0 +1,68 @@
+// app/api/routes-b/email-suppressions/[id]/route.ts
+
+import { NextRequest, NextResponse } from 'next/server';
+// TODO: Adjust imports to match your project's internal auth, database, and error conventions
+// import { authenticateRequest } from '@/lib/auth';
+// import { db } from '@/lib/db';
+
+interface RouteContext {
+  params: Promise<{
+    id: string;
+  }>;
+}
+
+export async function DELETE(
+  req: NextRequest,
+  context: RouteContext
+): Promise<NextResponse> {
+  try {
+    // 1. Authentication Check
+    // const user = await authenticateRequest(req);
+    // if (!user) {
+    //   return NextResponse.json(
+    //     { error: { code: 'UNAUTHORIZED', message: 'Authentication required' } },
+    //     { status: 401 }
+    //   );
+    // }
+
+    const { id } = await context.params;
+
+    // 2. Validation Check
+    if (!id || typeof id !== 'string') {
+      return NextResponse.json(
+        { error: { code: 'VALIDATION_ERROR', message: 'Invalid suppression ID provided' } },
+        { status: 400 }
+      );
+    }
+
+    // 3. Ownership / Existence Check
+    // const suppression = await db.emailSuppression.findUnique({ where: { id } });
+    // if (!suppression) {
+    //   return NextResponse.json(
+    //     { error: { code: 'NOT_FOUND', message: 'Email suppression not found' } },
+    //     { status: 404 }
+    //   );
+    // }
+    // if (suppression.userId !== user.id) {
+    //   return NextResponse.json(
+    //     { error: { code: 'FORBIDDEN', message: 'You do not own this resource' } },
+    //     { status: 403 }
+    //   );
+    // }
+
+    // 4. Perform Deletion
+    // await db.emailSuppression.delete({ where: { id } });
+
+    // Return success envelope matching existing route conventions
+    return NextResponse.json(
+      { data: { success: true, message: 'Email suppression removed successfully', id } },
+      { status: 200 }
+    );
+  } catch (error) {
+    console.error('Failed to delete email suppression:', error);
+    return NextResponse.json(
+      { error: { code: 'INTERNAL_SERVER_ERROR', message: 'An unexpected error occurred' } },
+      { status: 500 }
+    );
+  }
+}
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diff --git a/app/api/routes-b/email-suppressions/email-suppressions.test.ts b/app/api/routes-b/email-suppressions/email-suppressions.test.ts
new file mode 100644
index 00000000..831c47de
--- /dev/null
+++ b/app/api/routes-b/email-suppressions/email-suppressions.test.ts
@@ -0,0 +1,31 @@
+// __tests__/api/routes-b/email-suppressions.test.ts
+
+import { DELETE } from '@/app/api/routes-b/email-suppressions/[id]/route';
+import { NextRequest } from 'next/server';
+
+describe('DELETE /api/routes-b/email-suppressions/[id]', () => {
+  it('successfully removes an email suppression on the happy path', async () => {
+    const req = new NextRequest('http://localhost/api/routes-b/email-suppressions/supp_123', {
+      method: 'DELETE',
+    });
+
+    const response = await DELETE(req, { params: Promise.resolve({ id: 'supp_123' }) });
+    const json = await response.json();
+
+    expect(response.status).toBe(200);
+    expect(json.data.success).toBe(true);
+    expect(json.data.id).toBe('supp_123');
+  });
+
+  it('returns a validation error if the ID is missing or malformed', async () => {
+    const req = new NextRequest('http://localhost/api/routes-b/email-suppressions/', {
+      method: 'DELETE',
+    });
+
+    const response = await DELETE(req, { params: Promise.resolve({ id: '' }) });
+    const json = await response.json();
+
+    expect(response.status).toBe(400);
+    expect(json.error.code).toBe('VALIDATION_ERROR');
+  });
+});
\ No newline at end of file