Create a user pool
- At AWS Console
- Choose Cognito
- At Cognito interface
- Choose Create user pool
- Choose User name
- Choose Email
- Choose Next
- Choose Cognito default
- Choose No MFA for this project
- Choose Email Only
- Choose Next
- Choose Next
- Choose Send email with Cognito
- Choose Next
- User pool name: ChatPool
- App client name: chatapp
- Only choose Read permission: email, email_verified
- Choose Create user pool
