*Paubox Email API & SMTP Solutions - General

• Paubox Email API & SMTP Solutions: Comparison

*REST API

• Paubox Email API: REST API Setup
• Paubox Email API: REST API Documentation
• Paubox Email API: REST API SDKs
• Paubox Email API: REST API Testing with Postman

*SMTP Server Solution

• Implement a basic Ruby on Rails application that sends mail using the Paubox SMTP Server
• SMTP Server Solution - Code Samples

*SMTP Relay Service

• SMTP Relay Service - Ports to Use