Create an Indicator for Email Notifications on Horizontal Line Breaks & Candle Closures
Using ChatGPT (GPTs), I have developed an indicator that sends email notifications when a horizontal line is broken and the candle closes beyond it.
🔹 GPT Used: EA Creator
🔹 Functionality: Sends an email when a candle closes above or below a specified horizontal line.
🔹 Ideal for: Traders who want real-time alerts on key price levels.
Request Details & Execution Results
Since the initial request was a bit vague, I made some modifications to refine the logic. While crafting the request can be tricky, leveraging AI assistance significantly reduces development time.
Request Specifications
External Parameters:
- Line Name: Set the name of the horizontal line (e.g., “Line A”).
- Timeframe: Select the timeframe for analysis.
- Email Title: Define the subject of the notification email.
- Email Body: Customize the email message content.
Logic:
- Send an email notification when the closing price of the previous candle crosses above “Line A”.
- Send an email notification when the closing price of the previous candle crosses below “Line A”.
- The email title and body are customizable via external parameters.
ChatGPT Output Code
The following indicator was created based on the specifications. It detects when the previous candle’s closing price crosses the horizontal line and triggers an email notification accordingly.
//+------------------------------------------------------------------+ //| Horizontal Line Break Alert Indicator | //| Copyright 2023, MetaQuotes Software Corp. | //| http://www.metaquotes.net/ | //+------------------------------------------------------------------+ #property copyright "Copyright 2023, MetaQuotes Software Corp." #property link "http://www.metaquotes.net/" #property version "1.00" #property strict #property indicator_chart_window // External Parameters input string LineName = "Line A"; // Horizontal line name input ENUM_TIMEFRAMES TimeFrame = PERIOD_CURRENT; // Timeframe selection input string MailTitle = "Line Break Alert"; // Email notification title input string MailBody = "Line A has been broken."; // Email notification message //+------------------------------------------------------------------+ //| Indicator Initialization Function | //+------------------------------------------------------------------+ int OnInit() { if (!ObjectFind(0, LineName)) { Print("Line '", LineName, "' found."); } else { Print("Line '", LineName, "' not found. Stopping indicator."); return(INIT_FAILED); } return(INIT_SUCCEEDED); } //+------------------------------------------------------------------+ //| Main Processing Function (Triggered on Each Tick) | //+------------------------------------------------------------------+ void OnTick() { double linePrice = ObjectGetDouble(0, LineName, OBJPROP_PRICE1); double prevClose = iClose(_Symbol, TimeFrame, 1); // Check for an upward breakout if (prevClose > linePrice) { string message = MailBody + " Breakout Up!"; SendMail(MailTitle, message); } // Check for a downward breakout else if (prevClose < linePrice) { string message = MailBody + " Breakout Down!"; SendMail(MailTitle, message); } }Important Notes:
- The indicator requires “Line A” to exist on the chart. If it is missing, the indicator automatically stops to prevent errors.
- MetaTrader email settings must be correctly configured (SMTP server, port, username, password) for the
SendMailfunction to work.- The logic only evaluates completed candles (not real-time fluctuations).
- Notifications are sent every time a valid breakout occurs. Multiple emails may be triggered if the same condition repeats.
Optimized Code (After Adjustments)
After making additional refinements, here is the improved version of the indicator:
#property copyright "Copyright 2023, SeSe."
#property link "https://fx-trading-gym.info/"
#property version "1.00"
#property strict
#property indicator_chart_window
// External Parameters
input string LineName = "Horizontal Line 3354"; // Horizontal line name
input ENUM_TIMEFRAMES TimeFrame = PERIOD_CURRENT; // Timeframe selection
input string MailTitle = "Line Break Alert"; // Email notification title
input string MailBody = "Line A has been broken."; // Email notification message
//+------------------------------------------------------------------+
//| Indicator Initialization Function |
//+------------------------------------------------------------------+
int OnInit()
{
if (!ObjectFind(0, LineName))
{
Print("Line '", LineName, "' found.");
}
else
{
Print("Line '", LineName, "' not found. Stopping indicator.");
return(INIT_FAILED);
}
return(INIT_SUCCEEDED);
}
//+------------------------------------------------------------------+
//| Main Calculation Function (Triggered on Candle Closure) |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
const int prev_calculated,
const datetime &time[],
const double &open[],
const double &high[],
const double &low[],
const double &close[],
const long& tick_volume[],
const long& volume[],
const int& spread[])
{
double linePrice = ObjectGetDouble(0, LineName, OBJPROP_PRICE1);
double prevClose = iClose(_Symbol, TimeFrame, 1);
double prevOpen = iOpen(_Symbol, TimeFrame, 1);
static double sent_Close = 0;
// Check for an upward breakout
if (prevClose > linePrice && prevOpen < linePrice && sent_Close != prevClose)
{
string message = MailBody + " Breakout Up!";
SendMail(MailTitle, message);
Print(message);
sent_Close = prevClose;
}
// Check for a downward breakout
else if (prevClose < linePrice && prevOpen > linePrice && sent_Close != prevClose)
{
string message = MailBody + " Breakout Down!";
SendMail(MailTitle, message);
Print(message);
sent_Close = prevClose;
}
return 0;
}
🔹 Indicator Sample (Download)
🚀 A sample version of this indicator is available for download. Please complete the required action to unlock access.
👉 Download Now (Unlock content to access the file)
✅ Features:
✔️ Detects horizontal line breakouts
✔️ Sends email alerts upon confirmed breakouts
✔️ Customizable parameters for flexibility
✔️ Compatible with MT4 (MQL4)
⚠️ Note: This is a basic version for demonstration purposes. Proper backtesting and optimization are recommended before live trading.
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