new.email by Resend

The core of the product is a REST endpoint that sends one message per request. You pass a sender, recipient, subject, and HTML or React body, and Resend routes it through verified infrastructure. Delivery, bounce, and complaint events come back through webhooks so your app can react. The value here is reliability: deliverability work like SPF, DKIM, and DMARC is handled for you once a domain is verified.

Resend separates marketing email from transactional sending. You build a contact list, organize it into segments, and send broadcasts to people who opted in. Broadcasts count against your contact limit rather than your email quota, so a smaller list can receive a lot of messaging without extra cost. It's a lighter setup than a full marketing suite, aimed at teams already sending through Resend's API.

React Email lets developers write email templates as React components. You reuse components, keep templates in version control, and preview them locally instead of wrestling with nested HTML tables. Because templates live in code, a design change ships with the same deploy as the rest of your app.

You can point a domain's MX records at Resend and receive email into your own system. A webhook fires on each incoming message with the parsed body and attachments, ready to store, classify, or answer. This is what makes agent inboxes possible, since an agent can read a message and reply without a human forwarding it.

Resend maintains SDKs for Node.js, Python, PHP, Ruby, Go, Java, Laravel, Rust, and .NET, plus a command-line tool. You install the client for your language and send email with a few lines of code. The breadth matters because it avoids the glue code teams usually write for smaller providers.

The dashboard handles domain verification, API key rotation, webhooks, and delivery monitoring in one place. You can watch open and click events, trace a specific message, and manage sending reputation across regions. Multi-region sending and SOC 2 Type II compliance are included on every plan, which matters for teams with data residency or procurement requirements.

Resend adds AI features inside its editor. You can generate a full email, rewrite a passage, or draft an automation. A monthly credit allowance comes with each paid plan, and lighter tools like subject line suggestions and alt text generation don't spend credits at all. It's aimed at teams that want help drafting, not a full generative writing product.