Sendgrid: admin panel test works, not when user registers

System Information
  • Strapi Version: 3.6.8
  • Operating System: Ubuntu 20.04
  • Database: Mysqll
  • Node Version: 14.16.1
  • NPM Version: 7.21.0
  • Yarn Version:


I followed this guide to setup the email Sendgrid provider.

In the admin panel > Settings > Email settings, when I press Test email, I receive the email OK. But when a user registers, I get the error:

“The from address does not match a verified Sender Identity. Mail cannot be sent until this error is resolved. Visit Sender Identity - Twilio to see the Sender Identity requirements”

Enable email confirmation is ON.

What can be the problem?