Understand any stock in simple English
Enter a ticker to learn what the company does and how it makes money.
SendGrid, Inc.
SendGrid helps businesses send large amounts of email, like receipts and password resets, and makes sure they arrive.
Think of your inbox. Mixed in with notes from friends and family are receipts from stores, "your package shipped" alerts, and those "reset your password" emails. Somebody has to send all those messages, reliably, by the millions, and that somebody is often SendGrid.
SendGrid is an email company. Businesses pay it to deliver email at scale — things like order confirmations, password resets, and marketing newsletters — and to make sure those messages actually land in inboxes instead of getting lost in spam folders. It sells this mostly as a subscription software service, so customers pay based on how much email they send. Its customers range from tiny startups to huge companies, and they choose SendGrid because building this kind of email delivery plumbing yourself is a pain, and one wrong move means your receipts never reach your customers. The company was founded in 2009 in Boulder, Colorado, to solve exactly that problem, and it grew into one of the biggest independent email platforms. In 2019, the cloud communications company Twilio bought SendGrid for about $3 billion in stock, so today SendGrid operates as part of Twilio rather than as a standalone public company, and its shares no longer trade on their own.
The core insight is that sending email is easy, but sending email that reliably arrives at scale is genuinely hard. SendGrid handles the technical reputation management, the server infrastructure, and the analytics that tell a business whether its messages were delivered, opened, or bounced. That is why Twilio wanted it: Twilio already helped companies send texts and make calls, so adding email let it offer one place to manage all customer communication. For a curious reader, the big takeaway is that a lot of the internet's invisible plumbing — the boring, essential stuff nobody thinks about — is run by companies like this, and it can be worth billions.
Saved answer · last researched 11 Oct 2026