MS 
Mailosaur
Test email and SMS in automated end-to-end test suites.
Test email and SMS in automated end-to-end test suites.
Automating sign-up flows? Route test addresses to a MailKite webhook and assert on the JSON — no mailbox polling.
A minimal, copy-paste starter. Swap in your own domain and API key.
import { MailKiteClient } from "@mailkite/client";
// One API, your own DKIM-signed domain — no mail server to run
const mailkite = new MailKiteClient({ token: process.env.MK_API_KEY! });
await mailkite.send({
from: "you@yourdomain.com", // any address on a verified domain
to: "user@example.com",
subject: "Hello from Mailosaur",
html: "<p>Sent in milliseconds via MailKite.</p>",
});Mailosaur is a QA-focused service that gives you disposable inboxes your automated tests can assert against — did the email arrive, does it contain the text, does the link work. It's built for CI-driven end-to-end testing of email and SMS flows, with SDKs for the common test frameworks.
Tiered subscriptions
Email testing
Sandbox inboxes, preview, and spam-score checks for QA.
Automated end-to-end testing: capture emails/SMS at disposable addresses and assert on their content inside your test suite.
Point your test address at a MailKite webhook and assert on the parsed JSON event in your tests — a code-first alternative to mailbox polling.
Point a domain, drop in a webhook URL, and send your first email in minutes. Unlimited domains, no credit card.
