Uptime Sentinel 1.0.0

The first release. Three strikes, then it emails you.

Install

1. Download SiteMonitor-win-x64.zip below and unzip it.
2. Run powershell -ExecutionPolicy Bypass -File .\install.ps1 from an administrator PowerShell.
3. Set up email, add your sites, done. See the user guide.

No .NET install needed. Windows 10/11 or Server, 64-bit.

The executables aren't code-signed yet. If SmartScreen appears, click More info → Run anyway, or build from source.

What's in it

• Background Windows Service (SiteMonitorService.exe) plus a settings app (SiteMonitor.exe)
• HTTP checks (with expected status / required text), TCP port checks, ping. Auto mode picks the right one
• Configurable interval (10 s minimum), timeout, and failure threshold per site
• [DOWN], [RECOVERED] and optional "still down" reminder emails, with backoff retries if the mail server is unreachable
• SMTP provider presets: SMTP2GO, Brevo, Mailjet, Gmail, Zoho Mail, Microsoft 365, or Custom

SHA-256 c75da7028ad3d61b068bdd22a6d6d2b8addf3e118a8c0e703b39f0ec31bb1e93