Integrate and deliver in minutes with our RESTful Email APIs and SMTP libraries. Start sending with our free EMAIL API today.

Email Address Validation API · Transactional Email · Email Marketing · Testing 1,2,3

Send at scale with SendGrid's trusted email API and marketing campaigns platform, delivering 148+ billion emails for senders like you every month.

SendGrid Pricing and Plans · About Twilio SendGrid · Email API · Email Solutions

Prerequisites for sending your first email with the SendGrid API. These instructions describe how to send your first email using cURL calls. This is one of many ...

Start sending transactional and marketing email in minutes. Easily scale to enterprise-volume with Twilio SendGrid's Email API. Try it free!

Build an email program that supports cross-team collaboration, from integration and troubleshooting, to design and engagement tracking.

Use our real-time API to detect and suppress invalid email addresses. With a clean list, you reduce your bounce rate and perform better with mailbox providers ...