That’s great! Is there a good way to reference the library? I think I might still be missing something.
At the moment, I just have a test file called email-sendgrid.php that requires the wp-load.php file so that I can use WordPress functions. Previously, I also required the sendrid-php.php file, which resulted in the fatal error about SendGrid/Email already being in use. Removing that manually loaded sendgrid-php library, I get “Fatal error: Uncaught Error: Class ‘SendGrid’ not found in /email-sendgrid.php:188 Stack trace: #0 {main} thrown in /email-sendgrid.php on line 188”