Amazon Cognito
Developer Guide

Customizing Your Email Address

By default, the email messages that Amazon Cognito sends to users in your user pools come from no-reply@verificationemail.com. You can specify custom FROM email addresses and REPLY-TO email addresses to be used instead of no-reply@verificationemail.com.

To customize the FROM email address, choose Add custom FROM address and follow the instructions to verify your Amazon Simple Email Service identity. Choose an AWS Region and an Amazon SES verified identity. For more information, see Verifying Email Addresses and Domains in Amazon SES in the Amazon Simple Email Service Developer Guide.

To customize the REPLY-TO email address, choose Add custom REPLY-TO address and enter a valid email address.