This plugin connects your website to SendGrid for email delivery and contact management. It is designed for users who need reliable email sending directly from their site, but note that it is no longer maintained and has been permanently closed as of July 2021. Key features include: SMTP and API integration for sending emails through SendGrid's services, contact upload functionality to manage recipient lists directly from your site, and email delivery setup that works with older versions of the platform. However, due to its discontinued status, it may not function correctly with newer updates and lacks security support.