Email Infrastructure with Reputation Protection
We build email infrastructure for developers and SaaS teams. Reputation management, domain health scoring, and sending controls are built into the platform, so your team doesn't have to manage deliverability by hand.
Our Mission
Build email infrastructure where reputation protection comes built in. We handle the sending layer so your engineers can work on your product instead of chasing bounce rates.
Our Vision
We want to make reputation management something you never think about. Set up your domains, connect the API, and the system handles the rest. That's the goal.
How We Build
The engineering principles behind the platform.
Security First
TLS encryption, SPF/DKIM/DMARC on every domain, and API token authentication.
Fast Delivery
Priority queue for transactional emails. Sub-second processing, dedicated infrastructure.
Support That Responds
Direct access to the engineering team. We respond within 24 hours on business days.
Useful Analytics
Track opens, clicks, bounces, and domain health. Export reports or pipe events to your own systems via webhooks.
Developer Friendly
REST API and SDKs for Node.js, Python, PHP, and Go. SMTP relay for drop-in integration.
Built-in Protection
Reputation Shield watches bounce rates and ISP signals, then adjusts sending before problems escalate.
Built by Engineers Who Understand Email Deliverability
sendmsg.io came from a frustration we kept running into: email platforms that show you a declining reputation score but leave you to figure out what to do about it. We built infrastructure that actually responds to those signals, adjusting sending behavior before damage happens.
We run dedicated sending infrastructure across multiple IP pools, processing deliverability signals continuously. Every email sent through sendmsg.io is covered by reputation controls that kick in on their own when something goes wrong.
Our Infrastructure
Dedicated servers, multiple IP pools, priority queues
Dedicated servers with multi-pool IP architecture and priority queues. Transactional emails hit the priority queue and deliver in under a second.
What We're Building
Email infrastructure that protects your sender reputation without adding work for your team.
Distributed Infrastructure
Multiple IP pools across dedicated infrastructure. Your sending isn't sharing resources with anyone else.
Secure by Default
TLS encryption, API token auth, IP allowlisting, and WAF protection on higher tiers.
Priority Delivery
Transactional emails go through a dedicated priority queue. Sub-second processing, isolated from marketing traffic.
Ready to send with confidence?
Dedicated sending infrastructure with 5-level reputation protection and live domain health scoring. Your reputation is managed for you.