Warmy

Warmy is a focused deliverability infrastructure tool — if your SDR or BDR team is burning through domains because of spam placement, this is the category of fix you need, and Warmy covers the full stack from warm-up to DNS monitoring to inbox testing. On the agentic side, the REST API is available and the readiness is rated Capable, meaning you can wrap Warmy's warm-up and verification functions into your own orchestration layer or MCP setup without too much friction — though MCP-native status is unconfirmed, so budget time to validate endpoints before building anything production-grade on top. Pricing starts at $21/month but scales into custom enterprise tiers, so expect procurement involvement if you're managing dozens of domains across a large GTM org. The honest limitation here is scope: Warmy doesn't touch sequencing, copy, or CRM sync — it's purely the infrastructure layer, and you'll need to pair it with a separate outreach tool to run a complete outbound motion.