As of this week, Discord alerts are included on every Sentinel plan, including the free one. Paste a webhook, and downtime, SSL, and recovery alerts post to your server. No card, no trial clock.
Here's the reasoning, since pricing changes deserve reasons.
Slack is a business signal. Discord is a hobbyist signal.
When a workspace runs on Slack, there's almost always a budget somewhere behind it. When a community runs on Discord, there usually isn't, and there was never going to be. Gating Discord behind a paid plan wasn't monetizing anyone. It was just a wall between Sentinel and the people most likely to try monitoring for the first time: someone with a side project, a game server, a community site, and a Discord where their people already hang out.
Sending a webhook message costs us effectively nothing. The wall was all downside.
So the pricing now says what we actually believe: Discord is free for everyone, and Slack and Microsoft Teams live on the Starter plan and up, where the workspaces have budgets and the features earn their keep. If you're curious how that compares elsewhere, the market mostly agrees with the split, and we keep an honest comparison current.
What the free plan looks like now
Ten monitors, checked every five minutes, with uptime, response-time, JSON/API, and SSL monitoring, one public status page, and alerts by email and Discord. Commercial use is fine. Client sites are fine. It's free forever, not a trial that expires into a decision.
If your project grows into needing one-minute checks, more monitors, or the Slack app, the paid plans are there. If it doesn't, the free plan isn't going anywhere, and neither are your Discord alerts.
Setting it up takes about two minutes: create a webhook in your Discord server settings, paste it into your Sentinel profile, and send a test. The docs walk through it, screenshots and all.