The SENDUNE email designer focuses on simplicity and ease of use. It is lightweight. It does pure HTML - no intermediate code wranglers like mjml. There is no lock-in of any kind. Save HTML output as a template and use with ANY email service provider.
Send With SES
Send With SES is a wrapper built around AWS for sending Emails, SMS, and Push Notifications (coming soon) to your customers at low cost while ensuring high deliverability.