The SendGrid screen enables you to set up a SendGrid-integrated administrator e-mail account.

Accessing the screen

In the left sidebar menu, under "SETTINGS", click [External system integration] -> [SendGrid].

Image from Gyazo

Item descriptions

Image from Gyazo

Site e-mail addressEnter the admin e-mail address to be used.
(Note: This address must be registered in the list of allowed domains/e-mails.)
SendGridEnter the SendGrid API key in the corresponding field.
UpdateClick to apply the changes you made on this screen.