Deliver transactional and marketing emails at scale. A simple API, powerful SMTP relay, and the deliverability tools you need.
Free to start · No credit card required
import { MailBlastr } from 'mailblastr';
const mb = new MailBlastr('mb_xxxxxxxx');
const { data, error } = await mb.emails.send({
from: 'onboarding@yourdomain.com',
to: ['user@example.com'],
subject: 'Hello World',
html: '<strong>it works!</strong>',
});
if (error) return console.log(error);
console.log(data);A complete email platform built for modern engineering teams.
A simple, elegant REST API to start sending emails in minutes.
Drop-in SMTP replacement that works with any language or framework.
Detailed logs and real-time events so you know exactly what happened.
Receive real-time notifications for every delivery, open, click, and bounce.
Import contacts, segment lists, and send campaign emails.
Build beautiful emails with React components or a visual editor.
A clean REST API with SDKs for your favorite languages. Send emails, schedule sends, attach files, and manage contacts from the tools you already use.
const { data, error } = await mb.emails.send({
from: 'Acme <onboarding@acme.com>',
to: ['user@example.com'],
subject: 'hello world',
html: '<p>it works!</p>',
});No API migration needed. Point your existing application at MailBlastr’s SMTP endpoint and start sending with better deliverability and observability.
SMTP_HOST=smtp.mailblastr.com
SMTP_PORT=587
SMTP_USER=mailblastr
SMTP_PASS=mb_xxxxxxxxReceive real-time notifications directly to your server for deliveries, opens, clicks, bounces, complaints, and unsubscribes.
app.post('/webhook/mailblastr', (req, res) => {
const { type, data } = req.body;
if (type === 'email.delivered') {
analytics.track(data.to);
}
res.status(200).send('ok');
});“MailBlastr replaced three separate email tools. We run the whole outreach motion from one API now.”
“The developer experience is incredible. We were up and running in minutes, not days.”
“Deliverability improved overnight once we moved our transactional email to MailBlastr.”
Start for free and scale as you grow — up to 30% less than comparable email APIs. Cancel anytime.
For side projects
3,000 emails/mo
Start free trialFor growing products
50,000 emails/mo
Start free trialFor high-volume senders
100,000 emails/mo
Start free trialNeed more? Compare plans in detail →
Yes — you can add and verify any domain you own. We guide you through the DNS records (DKIM, SPF, DMARC) so mailbox providers trust your mail.
Absolutely. Use our REST API, SMTP relay, or official SDKs for Node.js, Python, Go, Ruby, PHP, and more.
Yes. Start for free and scale as your sending volume grows. No credit card required.
Bounces, complaints, and unsubscribes are tracked automatically and excluded from future sends.
More questions? Read the full FAQ →
Start sending with MailBlastr for free — no credit card required.