It looks like VisualCron’s built‑in email notification doesn’t fully support Gmail’s authentication and secure ports, which is why you’re seeing read exceptions on port 465 and STARTTLS issues on port 25. A reliable workaround is to set up an Email Task instead of using the generic notification — that tends to work better with Gmail’s security requirements. Also double‑check your SMTP settings (correct server, SSL/TLS options, and app‑specific passwords for Gmail) to make sure they match Gmail’s current requirements. Since forum support isn’t actively monitored here, if that doesn’t help you might want to reach out directly through VisualCron’s official support channels.