Transactional email
API and SMTP delivery with authentication, suppression handling, warming, and lifecycle events.
Send transactional emails, process inbound messages, protect user privacy with masked addresses. One API.
Install the official Postscale SDK for your runtime, call the public API with structured results, and verify signed webhooks without maintaining a custom HTTP wrapper.
import { Postscale } from "@postscale/postscale";
const postscale = new Postscale(process.env.POSTSCALE_API_KEY);
const { data, error } = await postscale.emails.send({
from: "hello@yourdomain.com",
to: ["user@example.com"],
subject: "Welcome",
html_body: "<strong>It works.</strong>",
});
if (error) throw new Error(error.message);
console.log(data?.message_id);Send through the API or SMTP, authenticate every domain, and follow each message from acceptance to delivery, bounce, or retry.
Delivery stream / live
healthy
Accepted
24,810
Delivered
99.98%
mx.google.com
outlook.com
example.net
EU/EEA
Primary service region
Primary service data hosted in-region, with a standard GDPR DPA.
5
Infrastructure products
One operational control plane
2
Sending interfaces
REST API and SMTP relay
24/7
Delivery visibility
Events, stats, and webhooks
Postscale keeps outbound delivery, inbound processing, privacy identities, authentication, and operational events in the same control plane.
API and SMTP delivery with authentication, suppression handling, warming, and lifecycle events.
Receive, parse, store, and route complete messages and attachments into your application.
Masked identities, DMARC reporting, abuse controls, and European-first data handling.
Predictable resources, scoped API keys, signed webhooks, and practical migration guides.
Start with sending, inbound processing, and masked addresses on one shared allowance. Upgrade for more volume, domains, analytics, and support.
See full pricing and plan detailsFree plan
For side projects and testing
For small apps and startups
For scaling applications
For growing applications
For high-volume senders
Monthly prices shown. Annual billing includes a 17% discount. Tax, if applicable, is shown at checkout.
Verify domains, authentication, suppression data, and sending limits.
Move one stream at a time while both providers remain observable.
Warm traffic, monitor bounces, and retire the old route when ready.