telegram4mql.dll is a compiled C/C++ library that extends the capabilities of MQL4 and MQL5. MetaTrader native code handles standard web requests via the WebRequest() function, but this function has limitations, such as blocking execution threads or requiring strict URL whitelisting in the terminal settings.
telegram4mql.dll is a third-party .NET library designed to bridge the gap between MetaTrader (MT4/MT5) and telegram4mql.dll