SendGrid

SendGrid provides a cloud-based service that assists businesses with email delivery. The service manages various types of email including shipping notifications, friend requests, sign-up confirmations, and email newsletters. It also handles Internet service provider (ISP) monitoring, domain keys, the sender policy framework (SPF), and feedback loops. Additionally, the company provides link tracking and open rate reporting. It also allows companies to track email opens, unsubscribes, bounces, and spam reports.

SendGrid offers a freemium version and a Lite Plan (pay-as-you-go), as well as three expanded levels of service: Essentials, Pro, and Premier.