Amazon SES vs Auth0

Amazon Simple Email Service (SES) is a cloud-based email sending and receiving service from AWS designed for marketers and application developers. It supports transactional, marketing, and bulk email delivery with deliverability tools, reputation monitoring, and email authentication.

Auth0 is an identity platform that provides authentication and authorization services for applications. Now part of Okta, it offers features including universal login, multi-factor authentication, social connections, and machine-to-machine authentication with support for multiple identity protocols.