Added Telegram Notification support, Not tested.

src/Ombi.Api.Telegram/ITelegramApi.cs

@@ -0,0 +1,9 @@
+using System.Threading.Tasks;
+
+namespace Ombi.Api.Telegram
+{
+    public interface ITelegramApi
+    {
+        Task Send(string message, string botApi, string chatId, string parseMode);
+    }
+}

src/Ombi.Api.Telegram/Ombi.Api.Telegram.csproj

@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Ombi.Api\Ombi.Api.csproj" />
+  </ItemGroup>
+
+</Project>

src/Ombi.Api.Telegram/TelegramApi.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Net.Http;
+using System.Threading.Tasks;
+
+namespace Ombi.Api.Telegram
+{
+    public class TelegramApi : ITelegramApi
+    {
+        public TelegramApi(IApi api)
+        {
+            _api = api;
+        }
+
+        private readonly IApi _api;
+        private const string BaseUrl = "https://api.telegram.org/bot";
+
+
+        public async Task Send(string message, string botApi, string chatId, string parseMode)
+        {
+            var request = new Request($"{botApi}/sendMessage", BaseUrl, HttpMethod.Post);
+            request.AddQueryString("chat_id", chatId);
+
+            var body = new
+            {
+                text = message,
+                parse_mode = parseMode
+            };
+
+            request.AddJsonBody(body);
+            await _api.Request(request);
+        }
+    }
+}