Custom Domain & Branding
Use your own domain name and customize email branding to match your corporate identity perfectly.
- Custom domain setup
- Brand customization
- Multiple domain support
Custom domains, enterprise-grade security, advanced admin controls, and real-time analytics — everything your US or Canadian business needs to own its communications. Pay by domain + storage, not per user — add unlimited mailboxes at no extra cost. See all features →
Comprehensive email infrastructure designed specifically for North American businesses.
Use your own domain name and customize email branding to match your corporate identity perfectly.
Advanced security including 2FA, encryption, anti-phishing, and intelligent spam filters.
Complete administrative control with granular user permissions and centralized management.
Real-time analytics and comprehensive DMARC reporting for complete visibility.
AI-powered filtering, catch-all functionality, and automated routing.
Dedicated IP addresses and premium infrastructure for optimal deliverability.
Our streamlined onboarding gets your business email live in minutes, not days.
Connect your domain and set up user accounts with our intuitive admin panel. Import existing users or create new ones in minutes.
Set up advanced security policies, spam filters, and access controls. Configure DMARC, SPF, and DKIM for maximum protection.
Access real-time dashboards, monitor email flow, track security events, and generate comprehensive reports.
Meeting the most demanding requirements for US & Canadian regulated industries. Learn more →
"DO Mailbox transformed our email operations overnight. The DMARC reporting alone saved us from three phishing attempts in the first month."
"Finally, an email provider that understands Canadian compliance requirements. Setup took less than an hour and the admin panel is incredible."
"The catch-all feature and custom domain setup were exactly what we needed. Support responds in under an hour — truly 24/7 as advertised."
No per-user fees. Hire 100 people, pay the same monthly rate. See full pricing →
Unlimited mailboxes
See planUnlimited mailboxes
See planUnlimited mailboxes
See planNeed more than 5 domains? Contact us for a custom quote →
Join 1,200+ US & Canadian businesses already using DO Mailbox. Start your free 14-day trial today — no credit card required.