The email platform everyone loves.
Your users expect their emails to arrive. PostaSend makes sure they do. With a clean API, real-time tracking, and infrastructure that scales from day one to millions of sends.
Integrate in minutes. Ship faster. Sleep better.
Welcome to our platform!
To: john.doe@example.com
Request received
14:23:01.000
Queued for delivery
14:23:01.063
Delivered to inbox
14:23:01.847
Email opened
14:27:33.441
Total delivery time 847ms
Platform
Everything email. Nothing extraneous.
A complete transactional email platform designed around the primitives developers actually need, not a dashboard-first product that treats the API as an afterthought.
Migrate in Minutes
Switch from your current email setup without touching a single template. Drop in the SDK, point your domain, and you're live, with zero downtime and zero data loss.
Multi-tenant Ready
Isolate sending identities, API keys, and analytics per customer. Perfect for SaaS platforms serving hundreds of tenants.
Real-time Analytics
Track open rates, click-throughs, bounces, and unsubscribes as they happen. Retention logs up to 90 days with export support.
Webhook Events
Push delivery events (sent, delivered, opened, clicked, bounced) to your endpoint in real time. Configurable retry logic with HMAC signatures.
Template Engine
Build dynamic emails with Handlebars-powered templates. Version control, preview rendering, and variable validation included.
SDK First
Type-safe TypeScript SDK with full IntelliSense support. Available for Node.js, Python, Go, and Ruby. OpenAPI spec included.
Quick Start
Send your first email in minutes
Install the SDK, grab your API key, and you are live. No SMTP credentials to configure, no allowlisting, no warm-up period required.
- ✓Works with your existing stack: Node, Python, Go, Ruby
- ✓Full TypeScript types, no runtime surprises
- ✓Responses in under 50ms at the p99
import { PostaSend } from 'postasend';
const client = new PostaSend({
apiKey: process.env.POSTASEND_API_KEY!,
});
const response = await client.emails.send({
from: 'hello@yourdomain.com',
to: ['user@example.com'],
subject: 'Welcome to our app!',
html: '<h1>Welcome aboard!</h1><p>Your account is ready.</p>',
// Optional: use a saved template
// templateId: 'tmpl_welcome_v2',
// data: { name: 'Alice', plan: 'Growth' },
});
console.log(response.messageId); // 'msg_abc123'
console.log(response.status); // 'queued'How it works
Live in four steps
From zero to sending in under ten minutes. No DevOps, no SMTP credentials, no warm-up period.
Create an account
Sign up in seconds. No credit card required. Your free tier is ready immediately.
Add a domain
Verify your sending domain with a DNS record. PostaSend guides you through every step.
Send via API, SDK or SMTP
Use our REST API, type-safe SDK, or drop-in SMTP relay, whichever fits your stack.
Track every email
Real-time delivery events, webhook push notifications, and 90-day analytics out of the box.
Works with the tools your team already uses
Frameworks
Languages & runtimes
Testimonials
Trusted by engineering teams
From early-stage startups to growth-stage SaaS. Here is what teams are saying.
“PostaSend cut our email delivery failure rate by 80% overnight. The provider failover feature alone paid for itself in the first week. We had an AWS SES incident that would have killed our onboarding flow.”
“We were building a multi-tenant SaaS and every other provider made tenant isolation a nightmare. PostaSend's first-class multi-tenant support had us shipped in a day. The TypeScript SDK is genuinely the best DX I've used.”
“Real-time webhooks and granular analytics finally let our CS team see exactly what's happening with customer emails. We deprecated three Zapier workarounds the same day we went live with PostaSend.”
Start sending in minutes
Free plan. No credit card required. Be live before your next standup.