🚀 Developer Tools
Developer Tools & APIs
Build programmatic email infrastructure with our suite of developer-friendly tools and APIs. Scale your cold email operations with enterprise-grade reliability.
The Cold Inbox API
Create, manage, and scale SMTP inboxes via API. Get unlimited domains, 100 inboxes, full SMTP credentials, and real-time provisioning. Perfect for outreach tools, agencies, and developers building email infrastructure.
REST APISMTP OutputUnlimited DomainsReal-time Activation
Starting at
$25/month
Learn More
More Tools Coming Soon
We're building additional developer tools and APIs. Join our waitlist to be notified when new tools are available.
Join WaitlistNeed Custom Development?
We build custom email infrastructure solutions for enterprise clients. From API integrations to white-label platforms, we can help scale your email operations.
Cold email infra
without the infra.
without the infra.
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