: In late 2019, many users found the library suddenly stopped working because Telegram updated its security requirements to TLS 1.2 . Older versions of the DLL relied on older security protocols, requiring a major update to remain compatible.
This DLL allows developers and system integrators to send and receive Telegram messages via MQTT publish/subscribe commands, effectively decoupling the Telegram API logic from the main application code.
To use the DLL for two-way operations—such as sending alerts to your phone and receiving remote commands back—follow these structural steps: 1. Generate Your Bot via BotFather Is it working with MT4 ? · Issue #21 · stevenengland/MMM
Method 1: The Native MQL WebRequest Approach (No DLL Required)
void SendAlert(string msg) string token = "YOUR_BOT_TOKEN"; string chat = "YOUR_CHAT_ID"; tg_send(token, chat, msg); telegram4mqldll
A significant issue occurred when Telegram updated its security protocols to require TLS v1.2 or higher for all API traffic. Older versions of the Telegram4MQL library (circa 2016) did not support this newer standard, causing messages to suddenly stop being sent. This was a critical problem as it left many EAs unable to notify their users.
Are you looking to send commands ?
Users should exercise caution when downloading DLLs from unverified sources, as they can execute arbitrary code on a computer. Similar tools like the or Alert MT4 to Telegram MQL5 offer verified alternatives for those uncomfortable with manual DLL management.
The library simplifies the interaction with the Telegram Bot API by handling the underlying web requests and data formatting. : In late 2019, many users found the
Algorithmic trading requires speed, reliability, and real-time communication. For traders using MetaTrader 4 (MT4) or MetaTrader 5 (MT5), staying updated on trade executions, margin calls, and strategy performance is critical. While MetaTrader offers built-in push notifications and email alerts, they often lack flexibility and speed.
is an external dynamic link library (DLL) written in .NET designed to bridge MetaTrader 4 (MT4) with Telegram via MQL4. This library enables algorithmic traders to bypass MetaTrader's native limitation in handling complex HTTP/HTTPS WebRequests, offering a direct mechanism to send trade alerts and parse two-way commands right from a Telegram chat.
To use the library, place the compiled files in their designated directories within your terminal's data folder: Open MT4, click .
┌─────────────────┐ ┌─────────────────┐ ┌──────────────────┐ │ Telegram App │ ◄───► │ Telegram4MQL.dll│ ◄───► │ MetaTrader (MQL) │ │ (Trader Phone) │ │ (.NET Engine) │ │ Expert Advisor │ └─────────────────┘ └─────────────────┘ └──────────────────┘ Over time, this workflow has evolved significantly: To use the DLL for two-way operations—such as
MetaTrader's handling of .NET DLL imports can be inconsistent. For MT5, the #import keyword may not always work directly for .NET assemblies. In such cases, you may need to explicitly declare all function prototypes inside the #import block, as shown in the earlier code example, rather than relying on automatic import detection.
By default, MQL restricts network functions like WebRequest to Expert Advisors only; calling such functions from a custom indicator returns error 4014 ("Function is not allowed for call"). To send Telegram messages from an indicator, you cannot rely on the built-in WebRequest . Instead, you must restructure your project to use Wininet.dll directly (a lower-level Windows HTTP library), which does have indicator compatibility.
Telegram4MqlDll is a compiled C++ library (.dll file) designed specifically for the MetaTrader environment. In MT4 and MT5, the native environment restricts direct, advanced web requests due to security protocols and performance limitations.
// +------------------------------------------------------------------+ // | Telegram.mq4 | // | https://github.com/stevenengland| // +------------------------------------------------------------------+ #property copyright "Copyright 2026" #property version "1.00" #property strict // Import functions directly from the external DLL #import "Telegram4Mql.dll" string TelegramGetUpdates(string apiKey, string validUsers, bool confirmUpdates); #import // Global Configuration input string InpBotToken = "123456789:ABCdefGhIJKlmNoPQRsTUVwxyZ"; // Telegram Bot Token input string InpChatID = "987654321"; // Authorized Telegram User Chat ID void OnInit() Print("Telegram4MQL initialized successfully."); void OnTick() // Check for incoming commands every tick CheckRemoteCommands(); void CheckRemoteCommands() // Query the DLL for recent messages sent to the bot string response = TelegramGetUpdates(InpBotToken, InpChatID, true); if(response != "" && response != "0") Print("Raw Data Received from Telegram: ", response); // Implement text string parsing here if(StringFind(response, "/closeall") >= 0) CloseAllPositions(); void CloseAllPositions() Print("Executing remote command: Closing all open trades."); // Order closing logic goes here Use code with caution. Debugging & System Requirements Architecture Incompatibilities (32-bit vs. 64-bit)
