New features, improvements, and fixes. We ship fast.
v1.1.2warmupmonitoring
Warmup engine upgrade + monitoring
- Spam-to-inbox rescue via IMAP — highest impact engagement signal
- Mark as important/starred (25% of warmup emails)
- Randomized reply rates (40%) with 10min-8hr delays
- AI-generated unique content per email via Mistral
- Randomized send timing (30s-15min intervals), weekend volume reduction
- 28-day ramp schedule (2→15/day) replacing 21-day
- Blacklist monitoring against 50+ lists (Spamhaus, Barracuda, SORBS, etc.)
- DNS health checks (SPF, DKIM, DMARC, MX, rDNS)
- Inbox placement testing with seed mailboxes
- PostHog analytics and Sentry error monitoring
v1.1.1infracli
Infrastructure + CLI
- CLI tool (@zend-sh/cli) — manage everything from your terminal
- DNS migrated to Cloudflare with full mail records
- DKIM generated and deployed for 12 domains
- Warmup dashboard with ramp progress and health trend
- Free tier BYOM onboarding flow
- IMAP header parsing fix for ImapFlow 1.2.x
- ACS auto-reply support in warmup detector
v1.1.0warmupoauthmilestone
Warmup Engine & OAuth Authentication
- P2P warmup engine with cross-team peer matching
- Google Workspace OAuth2 (service account delegation)
- Microsoft 365 MSAL OAuth2 redirect flow
- Background token refresh worker (300s loop)
- Warmup send gating — warming accounts excluded from campaigns
- Warmup status API endpoint
- Maintenance mode after ramp completion
v1.0.0launchmilestone
Core Platform Launch
- 30+ REST API endpoints for full cold email infrastructure
- Campaign engine with multi-step sequences, A/B variants, condition steps
- 4 mailbox rotation strategies (round-robin, health-weighted, least-used, random)
- IMAP reply detection with AI intent classification (8 categories)
- Webhook system with HMAC-SHA256 signing and retry
- Health monitoring with auto-pause (bounce >2%, complaint >0.3%)
- Global suppression list (CAN-SPAM compliant)
- Stripe billing (free/pro/scale/enterprise)
- MCP server for AI agent integration
- TypeScript + Python SDKs
- Marketing site, 52-page docs site, dashboard