Warmy
Warm your domains, land in the inbox.
What is Warmy
Warmy automates the email warm-up process by gradually ramping sending volume, simulating natural conversations, and engaging with sent emails to build sender reputation over time. It also runs inbox placement tests across major providers, verifies email addresses, tracks DNS records (SPF, DKIM, DMARC), and generates domain-level health reports from a single workspace. The tool is built for SDRs, BDRs, RevOps teams, and GTM leads at mid-market and enterprise companies running high-volume outbound where deliverability directly affects pipeline. The standout capability is AI-optimized sending patterns — the system adjusts warm-up behavior automatically rather than requiring manual schedule tuning. That said, Warmy is a deliverability infrastructure layer, not a sequencing or outreach tool — you'll still need a separate platform to write, send, and track your actual campaigns.
Key features
warmup, spam tests, and sender reputation
autonomous multi-step actions
event-driven integrations
Vanderbuild take
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.
Agentic stack profile
APIRESTProgrammatic access available.
REST API — straightforward to call from any agent or workflow tool. Rate limits and auth vary by plan.
API docs →Agentic readinessCapableSolid API access — wraps cleanly for agent use.
Solid REST or SDK access. No MCP server yet, but easy to wrap in custom agent tooling. Most modern SaaS tools land here.
Stack roleDeliverabilityWhere this tool slots into an agentic pipeline.
Plays the role of Deliverability in an agentic pipeline. Use it to keep email sending reputation healthy — warmup, spam tests.
Warmy alternatives
Tools that solve a similar problem — compared at a glance.
- Pricing
- Custom
- Budget
- $$$$
- Best for
- SDR / BDR, RevOps
- Readiness
- Capable
- API
- REST
- Pricing
- Custom
- Budget
- $$$$
- Best for
- SDR / BDR, RevOps
- Readiness
- Capable
- API
- REST
- Pricing
- Usage-based
- Budget
- $
- Best for
- Founder, GTM Engineer
- Readiness
- Capable
- MCP
- No
- API
- REST
Frequently asked questions
Does Warmy have a public API?
Yes — Warmy ships a REST API. Docs: https://www.warmy.io/api-documentation.
How much does Warmy cost?
Warmy: pricing is custom, expect enterprise tier ($$$$) spend. Full pricing page: https://www.warmy.io/pricing.
Who is Warmy best for?
Warmy is built for SDR / BDR, RevOps, GTM Lead. Fits Mid-market (50-500), Enterprise-sized teams.
How well does Warmy fit an agentic sales stack?
Tier: Capable. Solid public API, no MCP yet — straightforward to wrap in your own agent tooling.