diff --git a/aspnet-core/services/LY.MicroService.Applications.Single/Messages/PlatformEmailSettingsAppService.cs b/aspnet-core/services/LY.MicroService.Applications.Single/Messages/PlatformEmailSettingsAppService.cs
new file mode 100644
index 000000000..571a6d056
--- /dev/null
+++ b/aspnet-core/services/LY.MicroService.Applications.Single/Messages/PlatformEmailSettingsAppService.cs
@@ -0,0 +1,89 @@
+using Microsoft.AspNetCore.Authorization;
+using Volo.Abp.Emailing;
+using SendTestEmailInput = Volo.Abp.SettingManagement.SendTestEmailInput;
+using SettingManagementPermissions = Volo.Abp.SettingManagement.SettingManagementPermissions;
+
+namespace LY.MicroService.Applications.Single.Messages;
+
+[Authorize(SettingManagementPermissions.Emailing)]
+public class PlatformEmailSettingsAppService : SettingManagementAppServiceBase, IEmailSettingsAppService
+{
+    protected ISettingManager SettingManager { get; }
+
+    protected IEmailSender EmailSender { get; }
+
+    public PlatformEmailSettingsAppService(ISettingManager settingManager, IEmailSender emailSender)
+    {
+        SettingManager = settingManager;
+        EmailSender = emailSender;
+    }
+
+    public virtual async Task<EmailSettingsDto> GetAsync()
+    {
+        await CheckFeatureAsync();
+
+        var settingsDto = new EmailSettingsDto
+        {
+            SmtpHost = await SettingProvider.GetOrNullAsync(EmailSettingNames.Smtp.Host),
+            SmtpPort = Convert.ToInt32(await SettingProvider.GetOrNullAsync(EmailSettingNames.Smtp.Port)),
+            SmtpUserName = await SettingProvider.GetOrNullAsync(EmailSettingNames.Smtp.UserName),
+            SmtpDomain = await SettingProvider.GetOrNullAsync(EmailSettingNames.Smtp.Domain),
+            SmtpEnableSsl = Convert.ToBoolean(await SettingProvider.GetOrNullAsync(EmailSettingNames.Smtp.EnableSsl)),
+            SmtpUseDefaultCredentials = Convert.ToBoolean(await SettingProvider.GetOrNullAsync(EmailSettingNames.Smtp.UseDefaultCredentials)),
+            DefaultFromAddress = await SettingProvider.GetOrNullAsync(EmailSettingNames.DefaultFromAddress),
+            DefaultFromDisplayName = await SettingProvider.GetOrNullAsync(EmailSettingNames.DefaultFromDisplayName),
+        };
+
+        if (CurrentTenant.IsAvailable)
+        {
+            settingsDto.SmtpHost = await SettingManager.GetOrNullForTenantAsync(EmailSettingNames.Smtp.Host, CurrentTenant.GetId(), false);
+            settingsDto.SmtpUserName = await SettingManager.GetOrNullForTenantAsync(EmailSettingNames.Smtp.UserName, CurrentTenant.GetId(), false);
+            settingsDto.SmtpDomain = await SettingManager.GetOrNullForTenantAsync(EmailSettingNames.Smtp.Domain, CurrentTenant.GetId(), false);
+        }
+
+        return settingsDto;
+    }
+
+    public virtual async Task UpdateAsync(UpdateEmailSettingsDto input)
+    {
+        await CheckFeatureAsync();
+
+        await SettingManager.SetForTenantOrGlobalAsync(CurrentTenant.Id, EmailSettingNames.Smtp.Host, input.SmtpHost);
+        await SettingManager.SetForTenantOrGlobalAsync(CurrentTenant.Id, EmailSettingNames.Smtp.Port, input.SmtpPort.ToString());
+        await SettingManager.SetForTenantOrGlobalAsync(CurrentTenant.Id, EmailSettingNames.Smtp.UserName, input.SmtpUserName);
+        if (!input.SmtpPassword.IsNullOrWhiteSpace())
+        {
+            await SettingManager.SetForTenantOrGlobalAsync(CurrentTenant.Id, EmailSettingNames.Smtp.Password, input.SmtpPassword);
+        }
+        await SettingManager.SetForTenantOrGlobalAsync(CurrentTenant.Id, EmailSettingNames.Smtp.Domain, input.SmtpDomain);
+        await SettingManager.SetForTenantOrGlobalAsync(CurrentTenant.Id, EmailSettingNames.Smtp.EnableSsl, input.SmtpEnableSsl.ToString());
+        await SettingManager.SetForTenantOrGlobalAsync(CurrentTenant.Id, EmailSettingNames.Smtp.UseDefaultCredentials, input.SmtpUseDefaultCredentials.ToString().ToLowerInvariant());
+        await SettingManager.SetForTenantOrGlobalAsync(CurrentTenant.Id, EmailSettingNames.DefaultFromAddress, input.DefaultFromAddress);
+        await SettingManager.SetForTenantOrGlobalAsync(CurrentTenant.Id, EmailSettingNames.DefaultFromDisplayName, input.DefaultFromDisplayName);
+    }
+
+    [Authorize(SettingManagementPermissions.EmailingTest)]
+    public virtual async Task SendTestEmailAsync(SendTestEmailInput input)
+    {
+        await CheckFeatureAsync();
+
+        try
+        {
+            await EmailSender.SendAsync(input.SenderEmailAddress, input.TargetEmailAddress, input.Subject, input.Body);
+        }
+        catch (Exception e)
+        {
+            Logger.LogError("Error sending test email: " + e);
+            throw new UserFriendlyException(L["MailSendingFailed"]);
+        }
+    }
+
+    protected virtual async Task CheckFeatureAsync()
+    {
+        await FeatureChecker.CheckEnabledAsync(SettingManagementFeatures.Enable);
+        if (CurrentTenant.IsAvailable)
+        {
+            await FeatureChecker.CheckEnabledAsync(SettingManagementFeatures.AllowChangingEmailSettings);
+        }
+    }
+}