Email API: SendGrid's Email API allows businesses to send transactional and marketing emails effortlessly. SMTP Relay: Simple Mail Transfer Protocol (SMTP) relay helps in sending large volumes of emails without impacting the sending server. Webhooks: Real-time notifications on email events such as clicks, opens, and bounces. Deliverability Insights: Tools and analytics to improve email deliverability rates. Dedicated IP Addresses: Improve your sender reputation with dedicated IP addresses.