v1.8.0

What's New — Matching and exceeding Robotomail

New Worker Features (server-side, no CLI update needed)

SSE Real-time Event Stream

• GET /v1/events — connect once, receive email events as they happen
• No public URL needed (unlike webhooks). Perfect for agents behind firewalls
• Filter by event type, replay missed events via ?since=

Message Delivery Status Tracking

• Tracks: QUEUED → SENT → DELIVERED → BOUNCED → COMPLAINED → FAILED
• Receives Resend webhook callbacks via POST /api/resend-webhook
• Fires user webhooks and SSE events for each status change

API Key Permission Scoping

• scope: 'full' — all operations (default)
• scope: 'mailbox' — restricted to own mailbox only
• Safe for multi-agent deployments (one key per agent)

Webhook Retry with Auto-Pause

• Exponential backoff: 0s, 1s, 3s, 8s (4 attempts, < 15s total)
• 10 consecutive failures → webhook auto-paused (status: 'failed')
• Success resets failure counter

Custom Domain Guided Configuration

• POST /v1/domains — register domain, get required DNS records
• POST /v1/domains/:id/verify — check DNS via Cloudflare DoH
• Auto-validates MX + SPF records

Infrastructure

• Hourly cron cleanup for SSE events table (24h TTL)
• DB migration: 0002-events-domains-webhook-retry.sql
• 18 new tests for all v1.8.0 features

Documentation

• Complete docs site at mails0.com/docs (10 pages)
• Quickstart, Messages API, SSE Events, Authentication, Webhooks, Custom Domains, CLI, Python SDK, MCP Server

Full Changelog: v1.7.0...v1.8.0