Email + push setup

Alerts fire to one or more channels. Configure them once in Profile → Notifications, then per-alert pick which channels to use.

Channels

Desktop notification  →  always available; OS-native banner
Email                  →  requires verified email; Pro: 50/day cap
Push (mobile)          →  requires Spectra mobile app + signed-in account
Webhook                →  any URL; HMAC-signed by Spectra
Discord                →  shortcut to a Discord webhook with formatted body

Email setup

Profile → Notifications → Email → enter address → click verify in your inbox. We retry verification deliveries for 24 hours; after that the slot is freed. Free tier: no email channel. Pro: 50/day. Enterprise: unlimited.

Push setup

Install the Spectra mobile app (TestFlight / Play Store closed beta as of v0.6.x) and sign in with the same account. Push delivery is end-to-end encrypted — the alert body is encrypted with your account key before leaving the cloud worker.

Webhook setup

URL          →  https://your-server.example/spectra
Secret       →  AES-GCM sealed; never readable from the desktop
HMAC header  →  X-Spectra-Signature: sha256=<hex>
Replay       →  request fails if Spectra-Timestamp is > 5 min old

See Webhooks → Signing for verification on your side. Webhook URLs can be IP-allowlisted at the worker.

Discord shortcut

Discord webhooks accept JSON with a specific shape. Spectra has a preset that formats the alert as a clean embed (symbol, timeframe, expression, link to the chart). Pick Discord instead of Webhook to use it.

Order of fallbacks

If a channel fails (email bounce, webhook 5xx) Spectra tries the next one in priority order. Adjust priority in Profile → Notifications → Channel order.