How to Filter or Block Non-Business Emails in Microsoft Bookings?

Hi community! 👋

I'm currently using Microsoft Bookings to manage appointment scheduling for a project, and I’m looking for a way to restrict or filter out personal emails (like @gmail.com, @yahoo.com, etc.) from making bookings.

What I've Tried So Far:

• Required custom field asking users to "Enter your business email"
• Manual review via "Admin Approval" setting
• Filtering in Outlook after the booking is created

But these are still more like workarounds.
Is there any built-in feature or third-party integration that can:

•  Block bookings unless the email is from a business domain
•  Auto-decline free/personal email addresses
•  Or at least flag them in the calendar?

Bonus Context:

I run a digital experience site that blends online booking and content storytelling — one of our examples is this fun article combining real-life stories with booking-based workflows:
🔗 https://tirafficridergame.com/evel-knievel-mining-incident/

It’s not a direct tutorial, but we're expanding into more productivity-related content. Any help or plugin tips would be appreciated!

Thanks in advance! 🙏
— [Raza]

Let me know if you want to change the topic or make it more technical, SEO-focused, or tutorial-style.