Modern Resend & Mailgun Alternative
Email delivery for developers who demand perfection.
Send transactional emails at lightning speed. Complete with Easy DKIM domain verification, sandboxed HTML inspection, audience suppression lists, and developer-first REST APIs.
import { Mailzo } from "mailzo";
const mailzo = new Mailzo(process.env.MAILZO_API_KEY);
await mailzo.emails.send({
from: "Acme <onboarding@mailzo.co.in>",
to: ["user@company.com"],
subject: "Welcome to Mailzo!",
html: "<strong>Let's deliver with confidence.</strong>",
});Everything required to scale transactional delivery
Built on battle-tested infrastructure with sub-100ms queuing, automated DNS health checks, and bulletproof deliverability.
Sub-100ms Ingestion
Async Fastify pipeline backed by BullMQ & Redis handles burst spikes effortlessly without dropping messages.
Automated Easy DKIM & SPF
Instant DNS lookup via system resolvers ensures valid CNAME and TXT keys before sending to protect sender reputation.
Sandboxed HTML Inspector
Inspect every email in an isolated sandbox iframe with raw headers, HTML source code, and event logs.
Ready to send your first email in under 3 minutes?
Sign up today and get 3,000 free emails every month with complete access to APIs, domains, and audiences.