SDKs and AI tools | Resent

Node.js SDK

npm install resent.one

import { Resent } from "resent.one";
const resent = new Resent(process.env.RESENT_API_KEY!);
const result = await resent.emails.send({
  from: "Acme <noreply@yourdomain.com>",
  to: ["you@example.com"],
  subject: "hello world",
  html: "<p>it works!</p>",
});
console.log(result.submission_id);

Node.js SDK
Framework guides — Next.js, Express, NestJS, Bun, Workers, and more
Quickstart

Rust SDK

cargo add resent

use resent::{Resent, SendEmail};
let resent = Resent::new(std::env::var("RESENT_API_KEY").unwrap());
let result = resent
    .emails()
    .send(SendEmail::new("Acme <noreply@yourdomain.com>", ["you@example.com"], "hello").html("<p>hi</p>"))
    .await?;

Ruby SDK

gem install resent

require "resent"
resent = Resent.new(ENV.fetch("RESENT_API_KEY"))
result = resent.emails.send(
  from: "Acme <noreply@yourdomain.com>",
  to: "you@example.com",
  subject: "hello",
  html: "<p>hi</p>"
)

Go SDK

go get github.com/resentmail/resent-go@v0.1.1

client, err := resent.New(os.Getenv("RESENT_API_KEY"))
result, err := client.Emails().Send(ctx, &resent.SendEmail{
	From:    "Acme <noreply@yourdomain.com>",
	To:      []string{"you@example.com"},
	Subject: "hello",
	HTML:    "<p>hi</p>",
})

Python SDK

pip install resent

from resent import Resent
resent = Resent(os.environ["RESENT_API_KEY"])
result = resent.emails.send(
    from_="Acme <noreply@yourdomain.com>",
    to="you@example.com",
    subject="hello",
    html="<p>hi</p>",
)

PHP SDK

composer require resent/resent
# Laravel
composer require resent/laravel
# Symfony Mailer
composer require resent/symfony-mailer

PHP SDK
resent/resent · resent/laravel · resent/symfony-mailer

HTTP / cURL

Any language can call https://resent.one/api/v1 with:

Authorization: Bearer $RESENT_API_KEY

MCP Server

Connect AI assistants (Cursor, Claude Code, and others) to Resent docs via MCP:

https://developers.resent.one/_mcp/server

Full setup: MCP Server.