Verified B2B data and email, as APIs.

Magpie Cloud is the hosted platform behind MagpieCRM: our verification servers, data search and mail servers. Use it today in MagpieCRM and over MCP. The same engine is coming as APIs.

Join early access

Priced per call, with no seats. Read the docs

Checked with the mail server
Search results kept only if you save them
Your own domain, our mail servers

Request · POST /verify

curl https://api.magpie-cloud.com/v1/verify \
  -H "Authorization: Bearer $MAGPIE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "email": "alex.sample@examplefreight.example" }'

const res = await fetch("https://api.magpie-cloud.com/v1/verify", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.MAGPIE_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({ email: "alex.sample@examplefreight.example" }),
});
const data = await res.json();

import os
import requests

res = requests.post(
    "https://api.magpie-cloud.com/v1/verify",
    json={"email": "alex.sample@examplefreight.example"},
    headers={"Authorization": f"Bearer {os.environ['MAGPIE_API_KEY']}"},
    timeout=90,
)
data = res.json()

Response

{
  "email": "alex.sample@examplefreight.example",
  "verdict": "valid",
  "summary": "The mail server says this mailbox exists.",
  "checks": {
    "syntax": true,
    "domain": true,
    "mailbox": "exists",
    "disposable": false,
    "role": false,
    "free": false,
    "provider": null
  }
}

A preview of the email verification API, with a made-up address.

Ways in

Four ways to use the engine.

Two work today. The APIs and Magpie Data are in early access. How they fit together

Try it

Check an email address, live.

This is our free email verifier, on the same verification servers as the API. It asks the address's mail server whether the mailbox exists, and sends no email. 10 checks a day.

The email verification API Verify sign-ups with it

Recorded example: a real result from our free checker on 1 November 2026

Validpele@magpiecrm.com

The mail server says this mailbox exists. Safe to send.

Format: Valid
Domain takes email: Yes
Mailbox: Exists
Disposable address: No
Role address (info@, sales@): No
Free mailbox provider: No, a company domain

APIs

Find, check and reach the right people.

Five APIs, each doing a job MagpieCRM already does for its own customers. They're in early access.

In use today

The engine, at work in MagpieCRM.

MagpieCRM on Magpie Cloud runs on the same servers the APIs will. These are real screens, with made-up data.

MagpieCRM's Prospect Search: filters for job titles and seniority beside a list of people, some with verified work emails — **Prospect search and verified emails**Data search finds the people; the finder and verification servers confirm their emails as they're saved.

A sent campaign's results in MagpieCRM: delivered, opens, clicks and unsubscribes — **Campaigns on our mail servers**Sent from the customer's own domain, with bounces and complaints recorded and never emailed again.

Underneath

The servers behind it.

Checked with the mail server

Email addresses are asked of their own mail server, from our verification servers. No email is sent.

Paced, and checked every 6 hours

Checks are paced per mail provider and per company. Every verification IP is checked against blocklists every 6 hours.

Your domain, our mail servers

Email goes out from your own domain, signed with its own key, with bounces and complaints handled.

Hosted in the EU, code in the open

The services run in the EU. The app they serve is open source under AGPL-3.0.

How it's built, with links to the code

Changelog

Latest changes.

October 2026

31 October 2026Search
Verified people search checks each company's mail domain before showing its people
- Each batch is tested against the company's mail server before anyone in it is shown or charged for
- People hidden by those tests don't fill the page and don't use a credit
- Opt-outs and contacts you already have are left out, as in every other search
- Searching again doesn't show you the same people
Release v0.9.110 on GitHub
25 October 2026Search
Verified people search
- On hosted copies, a people search by job title can be answered by a search that checks each person against their live profile: title, location and employer
- People show as they're checked: slower than before, but every person is confirmed
- Revealing and saving people, and finding their emails, work as before
Release v0.9.109 on GitHub
17 October 2026Email finder
Email guesses in the order the data supports
- A person's six checks cover the likely formats and spellings together, such as both halves of a double-barrelled surname, and umlauts written out
- At companies of 50 people or fewer on their own domain, first@ is tried first
- Website-builder and link-in-bio hosts are never taken for a company's mail domain
- A learned format loses confidence only when a second person is rejected under it
Release v0.9.96 on GitHub

The whole changelog

Build on the engine behind MagpieCRM.

The APIs are in early access. Tell us what you'd use them for, and we'll write when your key is ready.

Join early access or read the API preview