Building the infrastructure layer
cold email deserves
Cold email is one of the most powerful growth channels in B2B. But the infrastructure behind it has been broken for years. We're fixing that.
The Problem
Every outbound team knows the pain. You set up Google Workspace accounts at $6-7 per mailbox per month. You're sharing infrastructure with millions of other users. One bad neighbor gets your IP blacklisted. Your carefully crafted campaigns go straight to spam.
Or you go the reseller route at $3/mailbox — still expensive at scale, still shared infrastructure, still fragile. The tools you use to send (Instantly, Smartlead) are excellent. But the infrastructure underneath? It's been an afterthought.
Our Solution
ColdRelay is the infrastructure layer. We handle everything underneath your sending platform: domains, mailboxes, DNS records, dedicated IPs, and isolated Azure tenants. All set up automatically in 2-4 hours.
Every customer gets their own dedicated environment. Your own IPs. Your own Azure tenant. Your own servers. No shared risk. No cross-contamination. Just clean, reliable infrastructure purpose-built for cold email at scale.
The Numbers
Starting at $1.00/mailbox per month — dropping to $0.55/mailbox at volume. That's up to 95% cheaper than Google Workspace. At 1,000 mailboxes, you're paying $700/month instead of $7,000.
We've helped teams contact 641,000+ prospects in a single campaign with 3.3% positive reply rates. That's the kind of scale that turns cold email from a gamble into a predictable pipeline.
Our Vision
We're building ColdRelay to become the default infrastructure choice for cold email globally. Every team running serious outbound should have access to enterprise-grade infrastructure at a fraction of the cost.
Volume negates luck. The more at-bats you have, the more predictable your results. ColdRelay gives you the infrastructure to swing as many times as you need.
What we believe
Infrastructure matters
The best sending tool in the world can't overcome bad infrastructure. We build the foundation that makes everything else work.
Isolation is non-negotiable
Shared infrastructure means shared risk. Every ColdRelay customer gets their own dedicated environment. Period.
Scale should be affordable
Enterprise-grade cold email infrastructure shouldn't require an enterprise budget. We make world-class infrastructure accessible to everyone.