You are the architect of the Contoso airline group. You are responsible for designing a notification system for a new application. The new application requires to be able to send and receive email messages via a REST API call. This solution also needs to be scalable. Which of the following technologies would best fit the design?
SendGrid is correct, as this is an email solution that provides email functionality with the ability to send and receive mail, it is also scalable and offers REST API functionality. Notification Hub will not suffice as this is used to send PUSH notifications on a large scale. Event Grid would not suffice as this is used to provide developers access to the events generated by cloud infrastructure. Service bus will not suffice, as this is a messaging service and not a notification service.