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Mission Inbox - Product Overview & Architecture

Mission Inbox - Product Overview & Architecture


The Three Core Technology Layers


Mission Inbox operates on three distinct layers that work together to maximize inbox placement:

1. Inbox Layer

For fast setup, the Inbox Layer allows users to:

  • Create or bring their own SMTP accounts or API
  • Features Auto-push DNS (for SPF, DKIM, and DMARC) with providers like Cloudflare and GoDaddy
  • One-click DNS automation for instant domain authentication


2. Pre-send Shield (MI Shield)

An AI-powered firewall that scans every outgoing email to prevent:

  • Poor structure
  • Lack of personalization
  • Bad DNS
  • Spam triggers

All checks happen BEFORE the message leaves the system.


3. OBM Engine (Outboxment)

The sending server component that offers:

  • Complete reputation control
  • Detailed logs
  • Bounce handling
  • Feedback loops
  • Deliverability analytics


Two Ways to Send Email

SMTP Mailboxes
  • Standard SMTP protocol
  • Works with any sales engagement platform
  • Plug-and-play integration
  • Traditional email sending approach


API Sending (OBM Engine)
  • RESTful API integration
  • SDKs for 6+ programming languages (Node.js, Python, Ruby, PHP, Go, Java)
  • Comprehensive documentation and examples
  • Webhook support for real-time events
  • <50ms average latency
  • 99.9% uptime
  • Sandbox environment for testing


Core Features

Cubes & Dedicated IPs (Isolated Infrastructure)
  • Every customer gets a dedicated server instance (a "Cube")
  • Each Cube comes with dedicated IP addresses owned solely by the customer
  • Workload-specific isolation: Sales, Marketing, Financial, and Transactional traffic are separated
  • No reputation bleed between Cubes
  • WHOIS-verifiable IP ownership
  • Scales from 10K to 30M sends per month
  • Setup in under 5 minutes
  • 100% isolated, zero shared risk
  • 98% inbox rate


MI Shield (AI-Enforced Protection)
  • Proprietary AI pre-send spam filter trained on 100M+ emails
  • Analyzes every outbound email before it is sent
  • Prevents messages that would trigger spam filters, throttling, or blacklisting
  • Continuously learns from inbox placement outcomes
  • Adapts as Google and Microsoft evolve their filtering systems
  • Key metrics: 99.7% inbox rate, <0.1% spam rate, 24/7 protection
  • Included with every Cube at no extra cost


Key Performance Metrics


Metric

Value

Inbox Rate

98% (99.7% with MI Shield)

Spam Rate

<0.1%

API Latency

<50ms average

Uptime

99.9%

Delivery Speed

<1 second

Setup Time

<5 minutes

Scale

10K to 100M+ sends/month

SDK Languages

6+


Platform Dashboard Features

The Mission Inbox dashboard provides:

  • Active Cube management (e.g., Sales & Marketing)
  • Email Sent tracking
  • Credits Used monitoring
  • Domain management
  • Mailbox management
  • Messages view
  • Projects organization
  • Domain verification alerts
  • Email Activity charts (7 days, 30 days, 6 months, 12 months)
  • Create New functionality
  • Search, history, and notification tools


How Mission Inbox is Different from Traditional ESPs

Traditional email services (SendGrid, Mailgun, Resend) are primarily designed for transactional email (receipts, password resets) and may block, limit, or suspend accounts that handle other email workloads.

Mission Inbox is built from the ground up as an all-in-one workload Infrastructure-as-a-Service (IaaS) platform, specifically engineered for deliverability across ALL email types. It provides the protection and control needed to send responsibly at scale without compromising performance or compliance.

Updated on: 26/02/2026

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