Why PostedApi

Deliverability is the product

Most email tools treat inbox placement as a feature. We treat it as the whole job. Here is what we do differently — and why your messages land.

Protected deliverability
Human review

Every sender is vetted by a human

No instant self-serve here. When you sign up, a real person on our team looks at what you plan to send and how you built your list. Spammers and list-buyers never get past the door — which keeps the IPs you send from spotless.

  • Every account approved by hand before the first send
  • A short signup review that filters out bad actors
  • Ongoing monitoring, so standards never slip
How we keep sending IPs clean
DKIM, SPF and DMARC authentication seals
Authentication

Authentication done right

DKIM, SPF and DMARC are table stakes, but getting every detail exactly right is fiddly. We sign every message, align your sending domains and hand you the exact DNS records once — then you never think about it again.

  • DKIM signing on every message, no extra config
  • SPF and DMARC values spelled out for your DNS
  • Full domain alignment for both API and SMTP sending
Set up your domain in the docs
Under the hood

Quiet work that pays off in the inbox

Separate infrastructure

Transactional and broadcast email run on fully separated infrastructure — IPs, domains and suppression lists. Your password resets never share a reputation with a promo blast.

Transparent by default

We publish live delivery rates per major mailbox provider, pulled from our own stats. If acceptance dips at Gmail or Outlook, you see it here before your users ever notice.

Automatic suppression

Hard bounces, spam complaints and unsubscribes are suppressed the moment we see them. No cron jobs, no CSV exports — and a webhook if you want the data in your app.

Proof, not promises

The numbers behind the promise

0%Delivery rate across all streams
0Median time to inbox
0Spam tolerance, now and always
0%Signups reviewed by a human
Two philosophies

Email sending, done two ways

The bulk-mail industry optimizes for signup volume. We optimize for the inbox. Pick your lane.

The PostedApi way

  • Every sender approved by a human before sending
  • Transactional and bulk kept on separated streams
  • Premium support included in every plan

The bulk-mailer way

  • Instant self-serve signup for absolutely anyone
  • Campaigns and receipts mixed on shared IPs
  • Support tiers — the good answers cost extra
“We came for the API and stayed for the deliverability. Two years and several million receipts later, not one has ever seen a spam folder.”
Priya Nair CTO, Heliotrope

Tired of babysitting your sender reputation?

Create your account, pass our (friendly) human review, and start landing in inboxes today. Your first 100 emails a month cost $1.90 — cancel anytime.