Type of Sending

API Sending OBM Engine

RESTful API integration with isolated email infrastructure. Built for developers and platforms that need programmatic email sending with guaranteed deliverability.
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Partners

Powering the next generation of outbound.

Trusted by Y Combinator startups and Enterprises sending 50M+ emails per month.
features

Why Choose Us

Everything you need for reliable, scalable email delivery
RESTful API
Simple, developer-friendly API with comprehensive documentation and SDKs. Integrate email sending into your application in minutes.
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RESTful API with intuitive endpoints
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SDKs for 6+ programming languages
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Comprehensive documentation and examples
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Webhook support for real-time events
<50ms
Latency
99.9%
Uptime
6+
Languages
Isolated Sending
Each API key gets dedicated infrastructure for maximum deliverability. Your sending reputation is protected and isolated.
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Dedicated IP per API key
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Separate infrastructure per account
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Protected from other senders
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Automatic reputation management
100%
Isolation
98%
Inbox Rate
99.9%
Delivery
Enterprise Security
API key authentication, rate limiting, and webhook security built-in. Enterprise-grade security for your email infrastructure.
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Secure API key authentication
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Rate limiting and throttling
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Webhook signature verification
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IP whitelisting support
TLS 1.3
Encryption
API Key
Auth
100%
Security
Scale Instantly
From 100 to 100M emails per month without infrastructure changes. Scale seamlessly as your business grows.
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Automatic scaling and optimization
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No infrastructure management required
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Pay only for what you use
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Real-time analytics and monitoring
100M+
Scale
<50ms
Speed
99.9%
Uptime
Comparison

Built for All Email Types

Unlike traditional ESPs, we support both transactional and cold email with isolated infrastructure.
Feature
Cold Email Friendly
Isolated Servers per Email Workflows
Warm-Up Capabilities
5 Minute API Integration
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SendGrid
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Mailgun
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Resend
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Cold Email Friendly
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Isolated Servers per Email Workflows
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Warm Up Capabilities
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5 Minute API Integration
Start Sending
SendGrid
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Cold Email Friendly
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Isolated Servers per Email Workflows
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Warm Up Capabilities
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5 Minute API Integration
Mailgun
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Cold Email Friendly
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Isolated Servers per Email Workflows
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Warm Up Capabilities
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5 Minute API Integration
Resend
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Cold Email Friendly
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Isolated Servers per Email Workflows
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Warm Up Capabilities
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5 Minute API Integration
See the difference true infrastructure isolation makes
Get Started with Mission Inbox

Built for

Everything you need for reliable, scalable email delivery
Developers
Build email sending into your application with a simple, powerful API.
Platforms
Provide email infrastructure to your users with isolated sending per account.
SaaS Companies
Transactional emails, notifications, and user communications at scale.
Startups
Start small and scale without worrying about email infrastructure.
pricing

Simple, Transparent Pricing

Start with what you need. Scale as you grow. No hidden fees, no surprises.
Mission Inbox is amazing. We’re seeing 85%+ open rates across all our campaigns.
Hussain Hazari
CEO
OutboundGen
Starting Price
$599/month
Most Popular
What's Included:
Includes 10K sends, dedicated IPs , and Slack priority Support
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Custom enterprise plans available for high-volume senders

Have Questions?

Our team is here to help you find the perfect email infrastructure solution for your needs.
Talk to Sales
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