QuickChannel is a developer library for sending messages between EAs/scripts running in different instances of MT5 on the same computer (or within a single copy of MT5). Typical uses include trade duplication between different MT5 accounts, and price comparison in order to detect arbitrage opportunities.

This is the MT5 version of QuickChannel. An MT4 version is also available.

QuickChannel can also be used to communicate between MT5 and other applications. You can use it in any programming environment which allows DLL calls. For example, you can use QuickChannel in MT4, in cTrader, or in VBA code in Microsoft Excel. All these environments can communicate with each other. For example, you can use QuickChannel to send messages between MT5 and Excel, or between MT4 and cTrader.

QuickChannel can deliver messages in less than 1 millisecond, without the EA/script having to run in an infinite loop or use large amounts of processor power.