What Cold Email Infra is Best?Stop Guessing. Try Everything.
While others juggle a few unreliable email providers or servers, we instantly route your emails across 100+ infrastructure partners adapting to spam filter changes hourly. Improve deliverability by average of 15 to 30% with setup in just 5 minutes.
☝️ DON'T BELIEVE US? Put your email above and see if we can land in your PRIMARY inbox (not spam!)
Works with:
Instantly
Smartlead
Clay
Apollo
ReplyIOLow to No Reply Rate? It's Not You - It's Your Cold Email Stack
Top agencies get high inbox rates by hiring Cold Email Infrastructure experts - specialists who manage diversified email infrastructure, multiple providers, constant optimization, and professional setup. We bring you the same top agency grade diversified approach for less than what you'd pay Google or Outlook.
Why Your Emails Hit Spam
Most cold email infrastructure relies on just 2-3 providers shared with thousands of other cold emailers. This shared reputation means you get lumped in with spammers, tanking your deliverability and reply rates.
Technical Nightmare
DKIM, DMARC, SPF, domain warming, IP reputation management, etc - the rules keep changing overwhelming most teams. Confusion over outdated advice or folklore.
Specialized Engineer Required
You need a $120K+/year specialist who understands SMTP protocols, bare metal servers, DNS management, and email infrastructure. Most companies can't afford this level of expertise.
How NOS Email Solves This
Send from your favorite tools like normal. Our AI instantly routes each email through the best infrastructure for maximum deliverability at minimum cost.
1. Send Like Normal
2. AI Smart Routing
3. Best Infrastructure
Why This Works Better
100+ Infrastructure Partners
Google Workspace, Outlook, SMTP providers, dedicated servers - we use them all to find the perfect match
Real-Time Optimization
AI analyzes deliverability every hour and adapts routing instantly - not outdated monthly reports
Works With Any Tool
Instantly, Smartlead, Apollo, or custom SMTP - just point to our endpoints and we handle the rest
Improved Deliverability
Achieve 15-30% better deliverability that beats single-provider setups consistently
NOS Email vs Google or Outlook
Simple, Transparent Pricing
No hidden fees. No setup costs. Just results that scale with your business.
Starter
Perfect for getting started
Growth
For growing businesses
Scale
For scaling teams
Enterprise
For large organizations
Ready to Boost your Deliverability?
Join the modern sales teams improving deliverability by 15-30% with NOS Email