Using the SendEmail function to alert me of potential problems in my MetaTrader live code.

alertMe.mq4

// This function provides a boilerplate type template for sending email alerts about your MetaTrader code.
// param subject (optional) => Usually a short description of what the email is alerting you about
// param body (optional) => As the email already contains many bits of information I just use the body for detailing a reason
// param systemTag (optional) => The name/tag of your expert advisor
//
// Example usage within my EA:
// alertMe( "CLOSE long order failed", "Reason: Closing a pending buystop order in function XYZ has failed", "My Sys (v1.0)" ); 

void alertMe( string subject = "", string body = "", string systemTag = "" ) {
    SendMail( subject + " " + Symbol() + " " + systemTag ,
        body + "\n" +
        "System: " + systemTag + "\n" +
        "Currency: " + Symbol() + "\n" + 
        "Error #: " + GetLastError() + "\n" +
        "Server Time: " + TimeToStr( TimeCurrent(), TIME_DATE|TIME_MINUTES|TIME_SECONDS ) + "\n" + 
        "Bar[0] Time: " + TimeToStr( Time[0], TIME_DATE|TIME_MINUTES|TIME_SECONDS ) + "\n" +
        "Account #: " + AccountNumber() + "\n"
    );
}

// if you have a global variable that contains the name of your expert advisor you can change the script above to 
// the following without needing to pass in the third parameter

void alertMe( string subject = "", string body = "" ) {
    string systemTag = globalSystemTag; // or whatever the name of your global variable is
    SendMail( subject + " " + Symbol() + " " + systemTag ,
        body + "\n" +
        "System: " + systemTag + "\n" +
        "Currency: " + Symbol() + "\n" + 
        "Error #: " + GetLastError() + "\n" +
        "Server Time: " + TimeToStr( TimeCurrent(), TIME_DATE|TIME_MINUTES|TIME_SECONDS ) + "\n" + 
        "Bar[0] Time: " + TimeToStr( Time[0], TIME_DATE|TIME_MINUTES|TIME_SECONDS ) + "\n" +
        "Account #: " + AccountNumber() + "\n"
    );
}