diff --git a/JewelryStoreRestApi/Program.cs b/JewelryStoreRestApi/Program.cs
index db22cef..bda72b2 100644
--- a/JewelryStoreRestApi/Program.cs
+++ b/JewelryStoreRestApi/Program.cs
@@ -20,7 +20,7 @@ builder.Services.AddTransient<IClientLogic, ClientLogic>();
 builder.Services.AddTransient<IJewelLogic, JewelLogic>();
 builder.Services.AddTransient<IMessageInfoStorage, MessageInfoStorage>();
 builder.Services.AddTransient<IMessageInfoLogic, MessageInfoLogic>();
-builder.Services.AddTransient<AbstractMailWorker, MailKitWorker>();
+builder.Services.AddSingleton<AbstractMailWorker, MailKitWorker>();
 
 builder.Services.AddControllers();
 // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle