diff --git a/src/Services/e-sender/O2NextGen.ESender.Api.sln b/src/Services/e-sender/O2NextGen.ESender.Api.sln
index 767412b9..032a97e4 100644
--- a/src/Services/e-sender/O2NextGen.ESender.Api.sln
+++ b/src/Services/e-sender/O2NextGen.ESender.Api.sln
@@ -5,6 +5,10 @@ VisualStudioVersion = 25.0.1700.0
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "O2NextGen.ESender.Api", "O2NextGen.ESender.Api\O2NextGen.ESender.Api.csproj", "{89FADD48-B8C5-4923-AA5C-D9FFF0B21E87}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "O2NextGen.ESender.Business", "O2NextGen.ESender.Business\O2NextGen.ESender.Business.csproj", "{AEB3AF96-A144-41F3-9F9D-715476640C42}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "O2NextGen.ESender.Impl", "O2NextGen.ESender.Impl\O2NextGen.ESender.Impl.csproj", "{912084D1-1E1A-4170-A345-375621788E06}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -15,6 +19,14 @@ Global
 		{89FADD48-B8C5-4923-AA5C-D9FFF0B21E87}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{89FADD48-B8C5-4923-AA5C-D9FFF0B21E87}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{89FADD48-B8C5-4923-AA5C-D9FFF0B21E87}.Release|Any CPU.Build.0 = Release|Any CPU
+		{AEB3AF96-A144-41F3-9F9D-715476640C42}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{AEB3AF96-A144-41F3-9F9D-715476640C42}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{AEB3AF96-A144-41F3-9F9D-715476640C42}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{AEB3AF96-A144-41F3-9F9D-715476640C42}.Release|Any CPU.Build.0 = Release|Any CPU
+		{912084D1-1E1A-4170-A345-375621788E06}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{912084D1-1E1A-4170-A345-375621788E06}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{912084D1-1E1A-4170-A345-375621788E06}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{912084D1-1E1A-4170-A345-375621788E06}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/src/Services/e-sender/O2NextGen.ESender.Api/Controllers/EmailSenderController.cs b/src/Services/e-sender/O2NextGen.ESender.Api/Controllers/EmailSenderController.cs
index 3001cd27..ffb380f1 100644
--- a/src/Services/e-sender/O2NextGen.ESender.Api/Controllers/EmailSenderController.cs
+++ b/src/Services/e-sender/O2NextGen.ESender.Api/Controllers/EmailSenderController.cs
@@ -1,8 +1,12 @@
 using System.Collections.Generic;
 using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
 using O2NextGen.ESender.Api.Helpers;
+using O2NextGen.ESender.Api.Mappings;
 using O2NextGen.ESender.Api.Models;
+using O2NextGen.ESender.Business.Services;
 
 namespace O2NextGen.ESender.Api.Controllers
 {
@@ -10,39 +14,38 @@ namespace O2NextGen.ESender.Api.Controllers
     public class EmailSenderController : Controller
     {
         private readonly IEmailSender _emailSender;
+        private readonly IEmailSenderService _emailSenderService;
 
-        public EmailSenderController(IEmailSender emailSender)
+        public EmailSenderController(IEmailSender emailSender, IEmailSenderService emailSenderService)
         {
             _emailSender = emailSender;
+            _emailSenderService = emailSenderService;
         }
-        private static long _currentCertificateId = 1;
-
-        private static List<MailViewModel> _mailLetters = new List<MailViewModel>()
-         {
-             new MailViewModel() {Id = 1, From ="from@eexample.com",To = "example@eexample.com", Subject="theme", Body="<h1>last</h1>"},
-             new MailViewModel() {Id = 2, From ="from@eexample.com",To = "example@eexample.com", Subject="theme", Body="<h1>last</h1>"},
-         };
 
         [HttpGet]
         [Route("")]
-        public IActionResult Index() => View(_mailLetters);
+        public async Task<IActionResult> Index()
+        {
+            var models = await _emailSenderService.GetAllAsync(CancellationToken.None);
+            return View(models.ToViewModel());
+        }
 
         [HttpGet]
         [Route("{id}")]
-        public IActionResult Detail(long id)
+        public async Task<IActionResult> Detail(long id)
         {
-            var certificate = _mailLetters.SingleOrDefault(_ => _.Id == id);
-            if (certificate == null)
+            var emailRequest =await _emailSenderService.GetByIdAsync(id, CancellationToken.None);
+            if (emailRequest == null)
                 return NotFound();
-            return View(certificate);
+            return View(emailRequest.ToViewModel());
         }
 
         [HttpPost]
         [Route("id")]
         [ValidateAntiForgeryToken]
-        public IActionResult Edit(long id, MailViewModel model)
+        public async Task<IActionResult> Edit(long id, MailRequestViewModel model)
         {
-            var certificate = _mailLetters.SingleOrDefault(_ => _.Id == id);
+            var certificate = await _emailSenderService.GetByIdAsync(id, CancellationToken.None);
             if (certificate == null)
                 return NotFound();
             certificate.From = model.From;
@@ -62,11 +65,10 @@ public IActionResult Create()
 
         [HttpPost]
         [Route("")]
-        public IActionResult CreateReally(MailViewModel model)
+        public async Task<IActionResult> CreateReally(MailRequestViewModel model)
         {
-            model.Id = _currentCertificateId++;
-            _mailLetters.Add(model);
-            _emailSender.Send(model.To, model.Subject, model.Body);
+            var emailRequest = await _emailSenderService.AddAsync(model.ToModel(), CancellationToken.None);
+            await _emailSender.Send(model.To, model.Subject, model.Body);
             return RedirectToAction("Index");
         }
     }
diff --git a/src/Services/e-sender/O2NextGen.ESender.Api/IoC/ServiceCollectionExtensions.cs b/src/Services/e-sender/O2NextGen.ESender.Api/IoC/ServiceCollectionExtensions.cs
index 44d9a11e..8ee99a4c 100644
--- a/src/Services/e-sender/O2NextGen.ESender.Api/IoC/ServiceCollectionExtensions.cs
+++ b/src/Services/e-sender/O2NextGen.ESender.Api/IoC/ServiceCollectionExtensions.cs
@@ -1,6 +1,9 @@
 using System;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
+using O2NextGen.ESender.Api.Helpers;
+using O2NextGen.ESender.Business.Services;
+using O2NextGen.ESender.Impl.Services;
 
 namespace O2NextGen.ESender.Api.IoC
 {
@@ -21,5 +24,15 @@ public static TConfig ConfigurePOCO<TConfig>(this IServiceCollection services, I
             services.AddSingleton(config);
             return config;
         }
+        public static IServiceCollection AddBusiness(this IServiceCollection services)
+        {
+            services.AddSingleton<IEmailSenderService, InMemoryEmailSenderService>();
+            // Include DataLayer
+            // services.AddScoped<IEmailSenderService, EmailSenderService>();
+            //more business services...
+            
+            services.AddSingleton<IEmailSender, EmailSender>();
+            return services;
+        }
     }
 }
\ No newline at end of file
diff --git a/src/Services/e-sender/O2NextGen.ESender.Api/Mappings/EmailRequestMappings.cs b/src/Services/e-sender/O2NextGen.ESender.Api/Mappings/EmailRequestMappings.cs
new file mode 100644
index 00000000..e2b0e6b8
--- /dev/null
+++ b/src/Services/e-sender/O2NextGen.ESender.Api/Mappings/EmailRequestMappings.cs
@@ -0,0 +1,64 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using O2NextGen.ESender.Api.Models;
+using O2NextGen.ESender.Business.Models;
+
+namespace O2NextGen.ESender.Api.Mappings
+{
+    public static class EmailRequestMappings
+    {
+        public static MailRequestViewModel ToViewModel(this EmailRequest model)
+        {
+            if (model == null)
+                return null;
+
+            var viewModel = new MailRequestViewModel();
+
+            //Bindings
+            viewModel.Id = model.Id;
+            viewModel.From = model.From;
+            viewModel.To = model.To;
+            viewModel.Subject = model.Subject;
+            viewModel.Body = model.Body;
+            
+            return viewModel;
+        }
+
+        public static EmailRequest ToModel(this MailRequestViewModel requestViewModel)
+        {
+            if (requestViewModel == null)
+                return null;
+
+            var model = new EmailRequest();
+
+            //Bindings
+            model.Id = requestViewModel.Id;
+            model.From = requestViewModel.From;
+            model.To = requestViewModel.To;
+            model.Subject = requestViewModel.Subject;
+            model.Body = requestViewModel.Body;
+
+            return model;
+        }
+
+        public static IReadOnlyCollection<MailRequestViewModel> ToViewModel(
+            this IReadOnlyCollection<EmailRequest> models)
+        {
+            if (models.Count == 0)
+            {
+                return Array.Empty<MailRequestViewModel>();
+            }
+
+            var subscription = new MailRequestViewModel[models.Count];
+            var i = 0;
+            foreach (var model in models)
+            {
+                subscription[i] = ToViewModel(model);
+                ++i;
+            }
+
+            return new ReadOnlyCollection<MailRequestViewModel>(subscription);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Services/e-sender/O2NextGen.ESender.Api/Models/MailViewModel.cs b/src/Services/e-sender/O2NextGen.ESender.Api/Models/MailRequestViewModel.cs
similarity index 88%
rename from src/Services/e-sender/O2NextGen.ESender.Api/Models/MailViewModel.cs
rename to src/Services/e-sender/O2NextGen.ESender.Api/Models/MailRequestViewModel.cs
index 105c3306..23b38665 100644
--- a/src/Services/e-sender/O2NextGen.ESender.Api/Models/MailViewModel.cs
+++ b/src/Services/e-sender/O2NextGen.ESender.Api/Models/MailRequestViewModel.cs
@@ -1,7 +1,7 @@
 using System;
 namespace O2NextGen.ESender.Api.Models
 {
-    public class MailViewModel
+    public class MailRequestViewModel
     {
         public long Id { get;  set; }
         public string From { get;  set; }
diff --git a/src/Services/e-sender/O2NextGen.ESender.Api/O2NextGen.ESender.Api.csproj b/src/Services/e-sender/O2NextGen.ESender.Api/O2NextGen.ESender.Api.csproj
index 79739fb9..505d3612 100644
--- a/src/Services/e-sender/O2NextGen.ESender.Api/O2NextGen.ESender.Api.csproj
+++ b/src/Services/e-sender/O2NextGen.ESender.Api/O2NextGen.ESender.Api.csproj
@@ -32,4 +32,9 @@
     <None Remove="Views\" />
     <None Remove="Views\EmailSender\" />
   </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\O2NextGen.ESender.Business\O2NextGen.ESender.Business.csproj" />
+    <ProjectReference Include="..\O2NextGen.ESender.Impl\O2NextGen.ESender.Impl.csproj" />
+  </ItemGroup>
 </Project>
diff --git a/src/Services/e-sender/O2NextGen.ESender.Api/Startup.cs b/src/Services/e-sender/O2NextGen.ESender.Api/Startup.cs
index 927a8519..4d78a1aa 100644
--- a/src/Services/e-sender/O2NextGen.ESender.Api/Startup.cs
+++ b/src/Services/e-sender/O2NextGen.ESender.Api/Startup.cs
@@ -21,8 +21,8 @@ public Startup(IConfiguration appConfiguration)
         public void ConfigureServices(IServiceCollection services)
         {
             services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
+            services.AddBusiness();
             services.ConfigurePOCO<SenderConfig>(AppConfiguration.GetSection("Sender"));
-            services.AddSingleton<IEmailSender, EmailSender>();
         }
 
         public void Configure(IApplicationBuilder app, IHostingEnvironment env)
diff --git a/src/Services/e-sender/O2NextGen.ESender.Api/Views/EmailSender/Create.cshtml b/src/Services/e-sender/O2NextGen.ESender.Api/Views/EmailSender/Create.cshtml
index 1c406818..4ed455cc 100644
--- a/src/Services/e-sender/O2NextGen.ESender.Api/Views/EmailSender/Create.cshtml
+++ b/src/Services/e-sender/O2NextGen.ESender.Api/Views/EmailSender/Create.cshtml
@@ -1,4 +1,4 @@
-@model MailViewModel
+@model MailRequestViewModel
 
 <form asp-controller="EmailSender" asp-action="CreateReally" method="post">
     <label asp-for="From">From</label>
diff --git a/src/Services/e-sender/O2NextGen.ESender.Api/Views/EmailSender/Detail.cshtml b/src/Services/e-sender/O2NextGen.ESender.Api/Views/EmailSender/Detail.cshtml
index 084d6d08..ee3fb28c 100644
--- a/src/Services/e-sender/O2NextGen.ESender.Api/Views/EmailSender/Detail.cshtml
+++ b/src/Services/e-sender/O2NextGen.ESender.Api/Views/EmailSender/Detail.cshtml
@@ -1,5 +1,5 @@
 
-@model MailViewModel
+@model MailRequestViewModel
 
 <form asp-controller="EmailSender" asp-action="Edit" asp-route-id="@Model.Id">
     <label asp-for="From">From</label>
diff --git a/src/Services/e-sender/O2NextGen.ESender.Api/Views/EmailSender/Index.cshtml b/src/Services/e-sender/O2NextGen.ESender.Api/Views/EmailSender/Index.cshtml
index 017c8792..65f66232 100644
--- a/src/Services/e-sender/O2NextGen.ESender.Api/Views/EmailSender/Index.cshtml
+++ b/src/Services/e-sender/O2NextGen.ESender.Api/Views/EmailSender/Index.cshtml
@@ -1,4 +1,4 @@
-@model IEnumerable<MailViewModel>
+@model IEnumerable<MailRequestViewModel>
 
 @foreach (var certificate in Model)
 {
diff --git a/src/Services/e-sender/O2NextGen.ESender.Business/Models/EmailRequest.cs b/src/Services/e-sender/O2NextGen.ESender.Business/Models/EmailRequest.cs
new file mode 100644
index 00000000..f1f6dab4
--- /dev/null
+++ b/src/Services/e-sender/O2NextGen.ESender.Business/Models/EmailRequest.cs
@@ -0,0 +1,11 @@
+namespace O2NextGen.ESender.Business.Models
+{
+    public class EmailRequest
+    {
+        public long Id { get; set; }
+        public string From { get; set; }
+        public string To { get; set; }
+        public string Subject { get; set; }
+        public string Body { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/src/Services/e-sender/O2NextGen.ESender.Business/O2NextGen.ESender.Business.csproj b/src/Services/e-sender/O2NextGen.ESender.Business/O2NextGen.ESender.Business.csproj
new file mode 100644
index 00000000..17ca88b0
--- /dev/null
+++ b/src/Services/e-sender/O2NextGen.ESender.Business/O2NextGen.ESender.Business.csproj
@@ -0,0 +1,7 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>netcoreapp2.2</TargetFramework>
+    </PropertyGroup>
+
+</Project>
diff --git a/src/Services/e-sender/O2NextGen.ESender.Business/Services/IEmailSenderService.cs b/src/Services/e-sender/O2NextGen.ESender.Business/Services/IEmailSenderService.cs
new file mode 100644
index 00000000..6b98147e
--- /dev/null
+++ b/src/Services/e-sender/O2NextGen.ESender.Business/Services/IEmailSenderService.cs
@@ -0,0 +1,20 @@
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using O2NextGen.ESender.Business.Models;
+
+namespace O2NextGen.ESender.Business.Services
+{
+    public interface IEmailSenderService
+    {
+        Task<IReadOnlyCollection<EmailRequest>> GetAllAsync(CancellationToken ct);
+
+        Task<EmailRequest> GetByIdAsync(long id, CancellationToken ct);
+
+        Task<EmailRequest> UpdateAsync(EmailRequest emailRequest, CancellationToken ct);
+
+        Task<EmailRequest> AddAsync(EmailRequest emailRequest, CancellationToken ct);
+        
+        Task RemoveAsync(long id, CancellationToken ct);
+    }
+}
\ No newline at end of file
diff --git a/src/Services/e-sender/O2NextGen.ESender.Impl/Mappings/EmailRequestMappings.cs b/src/Services/e-sender/O2NextGen.ESender.Impl/Mappings/EmailRequestMappings.cs
new file mode 100644
index 00000000..36ca2fca
--- /dev/null
+++ b/src/Services/e-sender/O2NextGen.ESender.Impl/Mappings/EmailRequestMappings.cs
@@ -0,0 +1,22 @@
+using System.Collections.Generic;
+using O2NextGen.ESender.Business.Models;
+
+namespace O2NextGen.ESender.Impl.Mappings
+{
+    //
+    // {
+    //     public static EmailRequest ToService(this EmailRequest entity)
+    //     {
+    //         return entity != null ? new EmailRequest() {Id = entity.Id, Name = entity.Name} : null;
+    //     }
+    //
+    //     public static EmailRequestEntity ToEntity(this EmailRequest model)
+    //     {
+    //         return model != null ? new EmailRequestEntity() {Id = model.Id, Name = model.Name} : null;
+    //     }
+    //
+    //     public static IReadOnlyCollection<EmailRequest>
+    //         ToService(this IReadOnlyCollection<EmailRequestEntity> entities) =>
+    //         entities.MapCollection(ToService);
+    // }
+}
\ No newline at end of file
diff --git a/src/Services/e-sender/O2NextGen.ESender.Impl/Mappings/MappingExtensions.cs b/src/Services/e-sender/O2NextGen.ESender.Impl/Mappings/MappingExtensions.cs
new file mode 100644
index 00000000..7c0289c7
--- /dev/null
+++ b/src/Services/e-sender/O2NextGen.ESender.Impl/Mappings/MappingExtensions.cs
@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+
+namespace O2NextGen.ESender.Impl.Mappings
+{
+    internal static class MappingExtensions
+    {
+        public static IReadOnlyCollection<TOut> MapCollection<TIn, TOut>(this IReadOnlyCollection<TIn> input,
+            Func<TIn, TOut> mapper)
+        {
+            if (mapper is null)
+            {
+                throw new ArgumentNullException(nameof(mapper));
+            }
+
+            if (input is null || input.Count == 0)
+            {
+                return Array.Empty<TOut>();
+            }
+
+            var output = new TOut[input.Count];
+            var i = 0;
+            foreach (var entity in input)
+            {
+                output[i] = mapper(entity);
+                i++;
+            }
+
+            return new ReadOnlyCollection<TOut>(output);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Services/e-sender/O2NextGen.ESender.Impl/O2NextGen.ESender.Impl.csproj b/src/Services/e-sender/O2NextGen.ESender.Impl/O2NextGen.ESender.Impl.csproj
new file mode 100644
index 00000000..f3333786
--- /dev/null
+++ b/src/Services/e-sender/O2NextGen.ESender.Impl/O2NextGen.ESender.Impl.csproj
@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>netcoreapp2.2</TargetFramework>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\O2NextGen.ESender.Business\O2NextGen.ESender.Business.csproj" />
+    </ItemGroup>
+
+</Project>
diff --git a/src/Services/e-sender/O2NextGen.ESender.Impl/Services/InMemoryEmailSenderService.cs b/src/Services/e-sender/O2NextGen.ESender.Impl/Services/InMemoryEmailSenderService.cs
new file mode 100644
index 00000000..90c1a701
--- /dev/null
+++ b/src/Services/e-sender/O2NextGen.ESender.Impl/Services/InMemoryEmailSenderService.cs
@@ -0,0 +1,81 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using O2NextGen.ESender.Business.Models;
+using O2NextGen.ESender.Business.Services;
+
+namespace O2NextGen.ESender.Impl.Services
+{
+
+    public class InMemoryEmailSenderService : IEmailSenderService
+    {
+        #region Fields
+
+        private static readonly List<EmailRequest> Certificates = new List<EmailRequest>()
+        {
+            new EmailRequest()
+            {
+                Id = 1, From = "from@eexample.com", To = "example@eexample.com", Subject = "theme",
+                Body = "<h1>last</h1>"
+            }
+        };
+
+        private long _currentId;
+
+        #endregion
+
+        #region Ctors
+
+        public InMemoryEmailSenderService()
+        {
+            _currentId = Certificates.Count();
+        }
+
+        #endregion
+
+        #region Methods
+
+        public async Task<IReadOnlyCollection<EmailRequest>> GetAllAsync(CancellationToken ct)
+        {
+            await Task.Delay(3000, ct);
+            return await Task.FromResult<IReadOnlyCollection<EmailRequest>>(Certificates.AsReadOnly());
+        }
+
+        public async Task<EmailRequest> GetByIdAsync(long id, CancellationToken ct)
+        {
+            await Task.Delay(3000, ct);
+            return await Task.FromResult(Certificates.SingleOrDefault(g => g.Id == id));
+        }
+
+        public async Task<EmailRequest> UpdateAsync(EmailRequest certificate, CancellationToken ct)
+        {
+            await Task.Delay(5000, ct);
+            var toUpdate = Certificates.SingleOrDefault(g => g.Id == certificate.Id);
+            if (toUpdate == null)
+                return null;
+
+            toUpdate.From = certificate.From;
+            toUpdate.To = certificate.To;
+            toUpdate.Subject = certificate.Subject;
+            toUpdate.Body = certificate.Body;
+
+            return await Task.FromResult(toUpdate);
+        }
+
+        public async Task<EmailRequest> AddAsync(EmailRequest certificate, CancellationToken ct)
+        {
+            await Task.Delay(3000, ct);
+            certificate.Id = ++_currentId;
+            Certificates.Add(certificate);
+            return await Task.FromResult(certificate);
+        }
+
+        public Task RemoveAsync(long id, CancellationToken ct)
+        {
+            throw new System.NotImplementedException();
+        }
+
+        #endregion
+    }
+}
\ No newline at end of file