This task can be performed using Webmail Lookup
Frictionless magic links for higher user conversion rates
Best product for this task

Webmail Lookup
ui-ux
Webmail Lookup supercharges your user authentication flow by instantly detecting and suggesting the correct webmail provider for your users' email addresses. With lightning-fast 5ms response times, it streamlines magic link authentication and email verification processes. Skip the frustrating 'check your inbox' step β users get direct access to their email provider with a single click, dramatically improving signup completion rates and user experience.

What to expect from an ideal product
- Analyzes email addresses instantly to identify the provider (Gmail, Yahoo, Outlook etc.)
- Checks the domain part of the email against a database of known webmail services
- Returns the correct webmail login URL matching the user's email provider
- Processes lookups in 5ms or less for seamless integration into signup forms
- Maps custom domain emails to their actual hosting provider (like Google Workspace or Microsoft 365)