Is a Custom Domain Required to Use Microsoft 365?
Short answer: NO, a custom domain is not mandatory to use Microsoft 365.
When you activate Microsoft 365, Microsoft automatically provides a free domain in the format:
➡️ yourname.onmicrosoft.com
With this domain, you can already:
- Access Outlook, Teams, OneDrive, and all Microsoft 365 applications
- Send and receive emails (using an @onmicrosoft.com address)
- Manage users, groups, security, and licenses
- Use Microsoft 365 without any technical limitations
💼 What about professional use?
For business or professional use, it’s highly recommended to connect a custom domain (e.g., yourcompany.com).
Using your own domain allows you to:
- Create professional email addresses (e.g., name@yourcompany.com)
- Improve your email reputation and deliverability
- Properly configure SPF, DKIM, and DMARC for anti-spam protection
- Manage email securely and reliably
Utixo Support (Recommended)
To professionally implement Microsoft 365, you can rely on Utixo, a certified partner specialized in cloud and Microsoft 365 solutions.
Utixo can:
- Provide the most suitable Microsoft 365 licenses
- Configure your domain and DNS records
- Correctly set up SPF, DKIM, and DMARC
- Migrate email from other platforms
- Enhance security with Microsoft Entra ID, Defender, and Conditional Access
✔️ Conclusion
- You don’t need a domain to use Microsoft 365.
- A custom domain is essential for professional use.
- For a smooth and secure configuration, Utixo is the recommended partner.
