SpacePost vs Resend

Company and data

Who you contract with, and where your data lives

SpacePost is an EU company and keeps your data in the EU. Resend is a US company. The Resend column only states what Resend publishes on its own site.

Resend details are taken from resend.com (Terms of Service, DPA, privacy policy, sending regions and billing documentation, pricing page) on October 28, 2026. They can change; tell us at support@spacepost.dev if something is out of date.

Migration

Migrate in five steps

1. 01

   Create an account and verify your domain

   Sign up, add your sending domain and publish the three DKIM CNAMEs plus the MAIL FROM records. Keep Resend's records in place until you cut over; DKIM selectors do not collide.

2. 02

   Create an API key

   Keys start with sp_live_. Use a sending-access key restricted to your domain for production services.

3. 03

   Point your code at SpacePost

   Change the base URL and the key. Request bodies, response bodies and error shapes stay the same.

4. 04

   Re-create webhooks

   Add your endpoint in the dashboard. Signing uses the Standard Webhooks headers, so existing verification code keeps working with the new secret.

5. 05

   Cut over gradually

   Route a small share of traffic first, watch the email log and your webhooks, then switch the rest. Your suppression list does not transfer automatically; import known bounces and complaints first.

- RESEND_BASE_URL=https://api.resend.com
- RESEND_API_KEY=re_xxxxxxxx
+ RESEND_BASE_URL=https://api.spacepost.dev
+ RESEND_API_KEY=sp_live_xxxxxxxx

- import { Resend } from "resend";
+ import { SpacePost as Resend } from "@spacepost/node";

const resend = new Resend(process.env.SPACEPOST_API_KEY);

await resend.emails.send({
  from: "Acme <hello@acme.com>",
  to: ["ada@example.com"],
  subject: "Hello",
  html: "<p>Same call, different base URL.</p>",
});

SpacePost is an independent product and is not affiliated with or endorsed by Resend. "Resend" is a trademark of its owner. Comparisons reflect our understanding at the time of writing; tell us at support@spacepost.dev if something is wrong.