Hit the Inbox, Get More Responses, Meetings, and Sales.
Use thousands of Microsoft email accounts with our custom sending algorithm to fly under the spam radar and hit the inbox, not the spam folder.
100% Hands-Off Infrastructure Management
We handle everything on the backend so you don't have to. Our team:
- Sets up and configures all sending domains
- Creates and manages thousands of email inboxes
- Handles all technical infrastructure and maintenance
- Monitors deliverability and optimizes sending patterns
- Routes all emails directly through Microsoft servers—never third parties
Your team can focus 100% on what matters: creating effective campaigns and closing deals.
Inbox Placement That Drives Results
Our unique multi-account infrastructure ensures your cold emails bypass spam filters and reach decision-makers, generating real business results.
Fully Managed Infrastructure
Our white glove service sets up and manages thousands of email accounts and domains for you, with zero technical work on your end.
Deliverability Analytics
Real-time monitoring of inbox placement rates, domain health, and sender reputation to maximize your email performance.
Direct Microsoft Routing
Our proprietary sending algorithm routes all emails directly through Microsoft servers—never through third parties—ensuring maximum deliverability and sender reputation.
AI-Powered Sending Algorithm
We use a proprietary sending algorthm that is custom built to handle our massive infrastructure. Ensuring human-like behavior over thousands of emails accounts.
Horizontal Scaling
We set up thousands of inboxes that each send 1 email per day. This ensures our inboxes stay healthy for as long as possible and hit the inbox for months to come.
Automated Sequences
Create multi-touch email sequences that automatically follow up based on prospect behavior, all with guaranteed inbox placement.
Focus on Closing Deals, Not Managing Infrastructure
Join other B2B companies using Email OS's white glove service and multi-account infrastructure to reach more inboxes, get more responses, and drive revenue—without any technical headaches.