How to Send Email With PHP Using Twilio SendGrid

The guide by Matthew Setter explains how to send emails using PHP's Mezzio framework and Twilio SendGrid's API, focusing on a fictitious e-commerce shop scenario. It covers sending emails with plaintext and HTML bodies, including PDF attachments, and utilizing Twilio SendGrid's transactional templates for easier email body creation. The tutorial involves setting up a base application with necessary dependencies, configuring mail settings, creating a Handler class to send emails, and using transactional email templates to streamline the process. It also demonstrates attaching a PDF invoice to an email, leveraging substitutions for personalization, and emphasizes the benefits of using SendGrid's features to optimize email communication. The article encourages exploring the PHP library's documentation for additional functionalities such as scheduling emails and attaching files from cloud storage.