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Mission Inbox is migrating to a single tenant architecture to provide each customer with their own dedicated, isolated infrastructure. This upgrade offers enhanced performance, security, and customization capabilities.

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What is Single Tenant?

Single tenant means you get your own dedicated Mission Inbox infrastructure:

🏢 Your Own Servers

Dedicated SMTP and IMAP servers exclusively for your organization

🔒 Complete Isolation

Fully isolated environment that doesn’t share resources with other customers

🎯 Custom Domain

Your own subdomain: yourdomain.outboxment.com

💾 Dedicated Storage

Your own storage space exclusively for your data and traffic

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Migration Timeline

Mission Inbox is actively migrating all customers to single tenant infrastructure. Our goal is to complete migration for all customers within the next 2 months.

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How Migration Works

The migration process is fully managed by Mission Inbox:
  1. Notification: Our customer success team will reach out when your migration is scheduled
  2. Server Provisioning: Mission Inbox team provisions your dedicated infrastructure
  3. Data Migration: We handle all data migration and server configuration
  4. DNS Updates: We manage DNS changes (including MX records) if you’ve provided API keys
  5. Completion: You receive your new SMTP/IMAP connection details
  6. Reconnection: Simply update your mailbox connections with the new URLs
The only action required from you is to reconnect your mailboxes with the new SMTP and IMAP URLs after migration is complete.

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Key Benefits

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🚀 Enhanced Performance

Your traffic flows through dedicated servers without interference from other customers. No more shared resource contention or performance bottlenecks.

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⚡ Instant Customization

Need custom features or configurations? We can implement changes immediately since your infrastructure is isolated and won’t affect other customers.

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📈 Flexible Scaling

Scale your infrastructure up or down based on your specific needs:
  • Add more mailboxes
  • Increase domain capacity
  • Boost sending limits
  • Adjust storage allocation
All scaling happens on-demand based on your requirements.

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🎯 Predictable Performance

With dedicated resources, you get consistent, predictable performance. Your sending capacity isn’t impacted by other customers’ usage patterns.

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🔐 Enhanced Security

Complete isolation means your data, configurations, and traffic remain entirely separate from other organizations.

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What Changes After Migration?

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Your New Connection Details

After migration, your connection URLs will automatically update. The Account / Get current user information API endpoint (/api/userinfo/) returns your current SMTP and IMAP URLs based on your migration status. Before Migration: 
// Get user info
const response = await fetch('https://api-v2.missioninbox.com/api/userinfo/', {
  method: 'GET',
  headers: {
    'Authorization': 'Api-Key YOUR_API_KEY'
  }
});

const userInfo = await response.json();

// Before migration - shared infrastructure
const smtpConfig = {
  host: userInfo.ibx_smtp, // Returns: mail.inboxment.com
  port: 465,
  secure: true
};
After Migration: 
// Get user info - same API call
const response = await fetch('https://api-v2.missioninbox.com/api/userinfo/', {
  method: 'GET',
  headers: {
    'Authorization': 'Api-Key YOUR_API_KEY'
  }
});

const userInfo = await response.json();

// After migration - dedicated infrastructure
const smtpConfig = {
  host: userInfo.ibx_smtp, // Returns: yourdomain.outboxment.com
  port: 465,
  secure: true
};
The ibx_smtp and ibx_imap fields in the userinfo API automatically return the correct URLs based on your migration status. Always fetch these values from the API rather than hardcoding them.

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What Stays the Same

  • API Endpoints: All API calls remain unchanged
  • Authentication: Your API keys and credentials work exactly as before
  • Features: All Mission Inbox features continue to work identically
  • Integrations: GoDaddy and Cloudflare integrations remain functional
  • Workflows: Your existing workflows and automations continue without modification

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What You Need to Update

1

Fetch Updated URLs

Call the /api/userinfo/ endpoint to get your new SMTP and IMAP URLs (will return yourdomain.outboxment.com instead of mail.inboxment.com)
2

Update SMTP Settings

Update your email client or application SMTP configuration with the new URL from ibx_smtp
3

Update IMAP Settings

Update IMAP connections in your email clients with the new URL from ibx_imap
4

Test Connections

Verify that sending and receiving email works correctly with the new connection details
If your application already fetches SMTP/IMAP URLs dynamically from the /api/userinfo/ endpoint, the transition will be seamless - just restart your connections to pick up the new URLs.

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DNS Management During Migration

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Automatic DNS Updates

If you’ve provided GoDaddy or Cloudflare API keys, Mission Inbox will handle all DNS changes automatically:
  • MX Records: Updated to point to your dedicated infrastructure
  • SPF Records: Configured for your new mail servers
  • DKIM Records: Updated with new signing keys
  • DMARC Records: Maintained with proper configuration
Ensure your DNS provider API keys are configured and valid before migration. See our Integrations guide for setup instructions.

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Manual DNS Updates

If you manage DNS manually, our team will provide you with the exact DNS records to update.

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Getting Your Dedicated URL

Your dedicated subdomain follows this format: 
yourdomain.outboxment.com
Where yourdomain is typically based on your organization or primary domain name. Your customer success team will confirm your specific subdomain when scheduling your migration.

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Migration Process Details

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Phase 1: Preparation

  • Mission Inbox team provisions your dedicated servers
  • Infrastructure is configured and tested
  • Data migration plan is prepared

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Phase 2: Migration

  • Customer success team notifies you of the scheduled migration
  • Data is migrated to your dedicated infrastructure
  • DNS records are updated (if API keys provided)
  • New connection details are generated

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Phase 3: Completion

  • You receive your new SMTP/IMAP URLs
  • Reconnect your mailboxes with new connection details
  • Verify functionality with our support team
  • Migration is complete!

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FAQ

We schedule migrations to minimize disruption. Any brief downtime will be communicated in advance, and our team works to ensure the smoothest transition possible.
No! Your current connections are totally fine. Single tenant is an improvement and upgrade, not a fix for problems. You’re already on reliable infrastructure - this just makes it even better.
Migration is part of our infrastructure evolution to provide better service for all customers. Our goal is to migrate everyone within 2 months, and our team will work with you to ensure a smooth transition.
No code changes are required. Only SMTP and IMAP connection URLs need updating. All API endpoints, authentication, and functionality remain identical.
Yes! That’s one of the key benefits. Once you’re on dedicated infrastructure, we can implement custom configurations and features specific to your needs without affecting other customers.
Our customer success team will contact you directly to schedule your migration and provide all necessary details.
All your API keys remain valid and functional. No authentication changes are required.
Absolutely! One of the benefits of single tenant is on-demand scaling. Contact our team anytime you need to adjust capacity.

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Technical Specifications

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Dedicated Infrastructure Includes

  • SMTP Servers: Dedicated mail sending infrastructure
  • IMAP Servers: Dedicated mail receiving and storage infrastructure
  • Storage: Isolated storage for your emails and data
  • Database: Dedicated database instances for your data
  • Processing: Dedicated compute resources for your operations
  • Monitoring: Infrastructure monitoring and alerting

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Performance Characteristics

  • Isolation: Complete resource isolation from other tenants
  • Scalability: Vertical and horizontal scaling based on needs
  • Reliability: Dedicated infrastructure with built-in redundancy
  • Customization: Ability to tune configurations for your specific use case

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Preparation Checklist

Before your migration, ensure:
  • DNS provider API keys are configured (GoDaddy or Cloudflare)
  • Your team is aware of the upcoming migration
  • You have access to systems that need SMTP/IMAP URL updates
  • You’ve reviewed your current usage and scaling requirements
  • You’re in contact with our customer success team

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Support During Migration

Our team is here to help throughout the migration process:
  • Pre-Migration: Planning and preparation assistance
  • During Migration: Real-time support and monitoring
  • Post-Migration: Verification and troubleshooting help
  • Ongoing: Continued support for your dedicated infrastructure
Have questions about single tenant migration? Contact our customer success team or reach out through your normal support channels.

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After Migration

Once migrated, you’ll enjoy:
  • ✅ Dedicated, isolated infrastructure
  • ✅ Improved performance and reliability
  • ✅ Flexible scaling options
  • ✅ Faster feature customization
  • ✅ Your own yourdomain.outboxment.com subdomain
  • ✅ Dedicated storage and resources
  • ✅ All existing features and functionality
Everything else stays the same - same API, same features, same reliability you’re used to, just with enhanced performance and flexibility.
Migration in Progress: Mission Inbox is actively migrating customers to single tenant infrastructure. Our customer success team will reach out when you’re scheduled for migration. In the meantime, your current infrastructure continues to work perfectly.