Notes on phone-call alerting.

Thoughts on alerting, on-call sanity, and why we built a phone-call-only tool. We post when we have something to say, not on a schedule.

Why we built a phone-call-only alerting tool

Posted 2026-04-27 · ~6 min read

Slack at 3am is silent because you set it to be. A ringing phone is louder by design — and that’s the whole product. A short post on why we deliberately do not ship AI voice, recordings, SMS, or chat ack.
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More posts as we have something useful to add. Subscribe-by-email is roadmap (we do not have it yet, and we will not promise it before the inbox is real).

Why we built a phone-call-only alerting tool