A reusable function for sending email notifications from MikroTik RouterOS via SMTP.
Designed to be called from other scripts (e.g., login monitoring, alerts, backups).
- Script Name:
SendEmailFunction - Author: Hackitect7
- Year: 2025
- License: MIT
- GitHub: https://github.com/Hackitect7/routeros-scripts
This function allows you to send an email with optional attachment from a MikroTik device using built-in /tool e-mail send.
It supports TLS (port 465), external SMTP (e.g., Gmail, Yandex, Outlook), and is intended to be embedded into other scripts.
Inside the script, you must manually set the following values before use:
| Variable | Description |
|---|---|
SENDER_NAME@DOMAIN.com |
The actual email address used as sender and SMTP login. |
SENDER_PASSWORD |
The SMTP password or app-password. |
SENDER_SMTP_SERVER |
SMTP server domain (e.g., smtp.gmail.com). |
465 |
SMTP port. You can change if needed (e.g., 587). |
📌 Important:
- Ensure SMTP credentials are valid and the account allows SMTP access.
- Gmail/Outlook may require an App Password or enabling access for "less secure apps".
- Your MikroTik must allow outbound connections on the chosen port (default: 465).
- Set
"Don't Require Permissions"✅ for this script in RouterOS. - Do not check any policy checkboxes — it will inherit permissions from the caller script.
This script must be called from another script, not run directly.
:local SendEmail [:parse [/system script get SendEmailFunction source]];
$SendEmail SendTo="admin@example.com" TextMail="Login alert!" Subject="Router Login" FileName=""
| Variable | Description |
|---|---|
$SendTo |
Recipient's email address |
$Subject |
Subject line of the email |
$TextMail |
Body text of the email |
$FileName |
Optional file to attach (leave blank if unused) |
- Check logs in /log print if no email is received.
- Ensure your MikroTik device has a valid DNS and gateway.
- Use /tool e-mail manually to test if SMTP credentials work.
- RouterOS 7.x
- Gmail SMTP (via app-password)
- Yandex SMTP
- Outlook SMTP
NotifyUserLoginAttempts — Script that uses this function to alert on login/logout events.
Feel free to submit suggestions or improvements via GitHub. This is an open-source script under MIT license.