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Frostmailer

Cold email inboxes with an API, MCP and managed rotation

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Cold email infrastructure for agencies, B2B teams and developers. Azure tenants at €30 a month with acom domain and up to 100 inboxes included, plus Google Workspace from €2.50 an inbox. DNS and warm-up done, delivered in 10 to 24 hours. Order and manage everything through our REST API or MCP server, straight from Claude Code or Cursor. Managed Rotation swaps in fresh infrastructure every 6 weeks so your sending never decays. Or let Build and Release set it all up for you.

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PH · launched Oct 15, 2026 · 1 upvote (top 67%)

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Could you build this?

Partial The management dashboard and API can be vibe-coded, but provisioning Azure/Google enterprise tenants at scale, automated DNS setup, warm-up pools, and avoiding bulk fraud/spam detection requires specialized infrastructure automation and reseller relations.

What it would actually take: Requires programmatic integration with Microsoft Partner Center / CSP APIs and Google Cloud Identity APIs for programmatic tenant/workspace creation. The system must orchestrate automated domain registration, programmatic DNS record creation (SPF/DKIM/DMARC), and manage a distributed SMTP warm-up network with IP reputation monitoring while navigating strict anti-abuse policies.

Competitors

Other products that read as similar to this one : 250 launches clear the similarity bar, closest 8 shown.

Attention rank: #119 of 251 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 344 days after the earliest competitor.

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