Interlace Web Services
Infrastructure you operate.Not rent.
IWS is postal-grade delivery — the engine beneath 3LAY. Run SMTP and HTTP APIs on mail.iws.interlace.systems with predictable unit economics starting at $0.69 / 1k emails.
Capabilities
Built for operators, not tenants
Four surfaces. One delivery plane. Same engine that powers 3LAY.
Postal-grade transport
Self-hosted Postal on Hetzner — SMTP relay, HTTP API, and bounce handling you control.
Deliverability ownership
DKIM, SPF, DMARC, and reputation under your domain — not a shared third-party pool.
Observability built in
Queue depth, latency, and uptime monitoring on every hop — Grafana and Uptime Kuma on primary.
Operator console
API keys, domain verification, send logs, webhooks, and suppressions in one surface.
Interlace Web Services
The delivery engine.
Self-hosted Postal at mail.iws.interlace.systems — transport, reputation, and observability you operate. 3LAY runs on IWS today; the same engine stands on its own for anyone who outgrows shared relays.
Need campaigns, VIBEZ, and creative inbox layers? Start on 3LAY.