Your emails should reach the inbox. Not just get sent.

We built Postject because we were tired of sending emails and hoping they'd arrive.Now you can see exactly where each email lands, why it got there, and fix what's broken.

Inbox placement visibility
<500ms delivery latency
DKIM, SPF, DMARC enforced
Dedicated sending infrastructure
0+
Emails processed
0%
Uptime
<0ms
Avg delivery latency
0
Security incidents
DKIM signedSPF alignedDMARC enforcedTLS 1.2+Encrypted at rest
“We run our own SMTP servers and manage our own IP reputation. No shared black boxes.”

Here's what happens after you hit send

Delivery Trace
1.2s
$Resolving MX for gmail.com...
$Connected to smtp.gmail.com:25
$DKIM signature verified
$SPF check passed
$DMARC aligned
$250 OK delivered in 1.2s
Status
Delivered to Gmail Inbox in 1.2s
Placement
Inbox
DKIM
Pass
SPF
Pass
Message ID
msg_01H8K7W9X2VQPF3M6N...

Send your first email in seconds

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

Just regular HTTP and JSON.

No proprietary SDKs. No vendor lock-in. Works with whatever you're already using.

What other email APIs don't show you

Most email services tell you an email was “delivered” and call it a day. We show you exactly where it landed, why, and how to fix what's broken.

See where emails actually land

Most services tell you an email was "delivered" and call it a day. We show you if it hit the inbox, got filtered to promotions, or landed in spam.

Keep your critical emails separate

Password resets and receipts use different infrastructure than your newsletters. If your marketing campaign gets flagged, your login emails still work.

We own the pipes

We run our own SMTP servers and manage our own IP reputation. We're not reselling someone else's infrastructure or hiding behind a black box.

Understand what went wrong

Every bounce, complaint, and delivery gets tracked. You'll know if an email failed because of a bad address, spam filter, or authentication issue.

5-minute integration

One API endpoint, standard HTTP and JSON. No SDKs to install, no config files to wrangle. You can be sending emails before your coffee gets cold.

You stay in control

Separate your email types. Set up alerts. Protect your sender reputation. You decide how your email infrastructure works, not us.

Works with your stack

Plain HTTP and JSON. No SDK required, but we have them if you want them.

cURL
Node.js
Python
Go
Ruby
PHP

From zero to live in about 10 minutes

01

Sign up

Create your account in seconds. No credit card required.

02

Add your domain

Copy a few DNS records and we'll handle DKIM, SPF, and DMARC.

03

Send a test email

Fire off a curl request to verify everything works end to end.

04

Obtain your API key

Grab your production key from the dashboard. One key, full access.

05

Ship it

You're live. Start sending real emails with full visibility.

Track everything in real time

Inbox rate
0%
Spam rate
0%
Latency
0ms
Bounce rate
0%
Reputation
Excellent

Stop guessing if your emails made it.

Start knowing.

Frequently asked questions

Your emails are too important to cross your fingers

Start sending with confidence. See where every email lands.

No card required