Warmy
Email warm-up and deliverability platform with B2B and B2C mailbox networks, placement tests, an AI co-pilot and a 7-day free trial.
From $49/mo 7-day free trial API
Bottom line
Warmy is an email warm-up and deliverability platform that builds domain and IP reputation using business or consumer mailbox networks. It suits recruiters and agencies setting up new outreach domains who want warm-up, placement tests and Postmaster data in one place. Plans start from $49/month, priced by warm-up volume, with a 7-day free trial and no credit card.
Stands out for: Warmy lets you pick a B2B network of Workspace and Microsoft 365 mailboxes, which matters for recruiters emailing hiring managers at company domains, where many warm-up tools mix in consumer inboxes. It also pairs warm-up with a monthly rotating seed list and an AI co-pilot that explains what to fix.
Watch out for: Every plan is listed as starting from $49/month with volume-based pricing, so your real cost depends on how much warm-up you need and is not shown up front. Placement test allowances are confirmed with the Warmy team rather than published.
Overview
Warmy warms up your domains and IPs by generating and engaging with emails across its network of over 1 million mailboxes. You pick the B2B network to reach Google Workspace and Microsoft 365 business inboxes, or the B2C network for consumer Gmail, Yahoo and Outlook.
Beyond warm-up, plans include a deliverability monitor for domain and IP reputation, a Google Postmaster integration, placement tests against a 500K+ US seed list, email verification and DMARC monitoring. Each account gets a dedicated deliverability expert and 24/7 human support.
Adeline, Warmy's AI deliverability co-pilot, summarises reports and suggests next steps, and the Templates AI optimizer reviews copy before sending. AI Connect brings the same data into Claude, ChatGPT, Gemini and other MCP clients, and the API supports automation through tools such as n8n.
For a recruiting agency, Warmy fits the step between buying outreach domains and starting a sequence: warm them on the B2B network, check placement, then keep warm-up running in the background while campaigns go out.
Who it's for
Best for
- Agencies warming new cold email domains before launch
- Recruiters emailing hiring managers on company inboxes
- Teams that want warm-up and placement tests in one tool
- Senders who want deliverability data inside Claude or ChatGPT
Not ideal for
- Buyers who need a fixed published price per mailbox
- Teams that only need DMARC reporting
- Senders who just want a one-off spam test
Key features
B2B or B2C warm-up. Choose a network of business mailboxes on Google Workspace and Microsoft 365 or consumer Gmail, Yahoo and Outlook inboxes to match who you email.
Adeline AI co-pilot. Reads your reports and suggests next steps, and a Templates AI optimizer reviews copy before you send.
Placement tests and seed list. A 500K+ US seed list that rotates monthly shows inbox, spam or promotions placement.
Google Postmaster integration. Pulls your Postmaster data so warm-up volume is tuned to your domain and IP reputation.
Verification and DMARC. Email verification, a reputation tracker and DMARC monitoring sit in the same account.
API and AI Connect. A full API with n8n automation and MCP support so Claude, ChatGPT or Gemini can read your warm-up and placement data.
AI features
| What the AI does | Plan |
|---|---|
Only features named in the vendor's own documentation. Anything sold separately is marked as an add-on.
Pricing
| Plan | Price | What you get |
|---|---|---|
| B2B sender | From $49/mo | Warm-up with Google Workspace and Microsoft 365 business mailboxes |
| B2C sender | From $49/mo | Warm-up with Gmail, Yahoo and Outlook consumer inboxes |
| Custom plan | From $49/mo | Built with a deliverability expert, adds a customer success manager |
Warmy has three plans, each starting from $49/month: B2B sender, which warms up against business mailboxes on Google Workspace and Microsoft 365, B2C sender, which warms up against consumer Gmail, Yahoo and Outlook inboxes, and a Custom plan designed with a deliverability expert that adds a dedicated customer success manager. Pricing is volume based on the warm-up emails you need, and team members share the plan's quotas. Warmy offers a 7-day free trial with no credit card, and you can cancel anytime. Confirm current terms on the vendor site.
Checked 4 Nov 2026. Vendors change prices without notice.
Is Warmy expensive?
Warmy starts at $49/mo. We list 53 deliverability tools in total. 10 have a free tier, and those with a public price typically start around $29 a month.
- 5 quote-based
- 10 free tier
- 50 public price
Worked out automatically from every deliverability listing, so it updates as the directory changes.
Pros and cons
Pros
- B2B network of business mailboxes
- 7-day trial with no credit card
- AI co-pilot, API and MCP access
Cons
- Real price depends on volume
- Placement test allowance not published
- No annual price shown
Integrations
Google Postmaster Outreach Apollo.io ZoomInfo HubSpot Mailchimp Klaviyo n8n
What's new at Warmy
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How Warmy compares
See all Warmy alternatives, with what each one does differently and a head to head for every pairing.
| Tool | Free tier | From | MCP | API | Compare |
|---|---|---|---|---|---|
| | – | $49/mo | – | ✓ | |
| | – | $29/mo | ✓ | ✓ | Compare |
| | – | $20/mo | – | – | Compare |
| | – | $37.60/mo | ✓ | ✓ | Compare |
$29/mo MCP API
WarmySender is another warm-up tool, useful to compare if you want per-mailbox pricing instead of volume-based plans.
$20/mo
MailReach also pairs warm-up with spam tests and suits teams comparing warm-up networks.
$37.60/mo MCP API
Instantly bundles warm-up with its cold email sequencer, so teams already sending there may not need a separate warm-up tool.
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