Don't just send emails. Deliver them.

Your transactional emails are too important to end up in spam. Postject is the developer-first infrastructure that guarantees speed and deliverability.

10M+ emails delivered·99.9% uptime·<500ms delivery
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Stellar deliverability

We vet senders to keep IP reputation spotless. Your emails land in inboxes, not spam folders.

Transactional and promotional never mix

Password resets stay fast. Separate streams keep your critical emails isolated from bulk campaigns.

Start sending in minutes

No complex SDKs. No 50-page XML docs. Set up your domain, grab a key, send JSON.

Analytics you actually need

See exactly what happened to every email. Bounces, complaints, and deliveries processed automatically.

How it works

01

Create your account

First server and stream ready instantly.

02

Verify your domain

Add the DNS records. We handle DKIM.

03

Start sending

One endpoint. JSON in, emails out.

One endpoint. That's it.

Standard HTTP. Standard JSON. Works with every language and framework you already use.

Bounces, complaints, and suppressions handled natively. No extra code on your side.

# Send an email

curl "https://api.postject.com/v1/send" \
  -X POST \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer pt_live_***" \
  -d '{
    "from": "hello@yourapp.com",
    "to": "user@example.com",
    "subject": "Welcome aboard",
    "html": "<h1>You're in.</h1>"
  }'

Frequently asked questions

Stop losing emails to spam.

Start sending free — no card required