Below please find links to archived Q&A discussion for the Sending email with the SendGrid APIs course.
Sending email with the SendGrid APIs
Exercise 1.1: Why does the world need SendGrid?Exercise 1.2: Sending your first emailExercise 1.3: Getting fancy with HTML content
Exercise 2.1: What is the SMTP API and why is it so awesome?Exercise 2.2: Specifying multiple recipients in the headerExercise 2.3: Customizing content with substitutions
Exercise 3.1: Signing up for an accountExercise 3.2: Getting your account provisionedExercise 3.3: Documentation, tools, and support