Certified mail from your desk.Skip the post office line.
Write or upload the letter. PostKite checks the address with USPS and shows the full price before you pay — and the proof stays with every letter.
infoNo card to start. Postage is paid letter by letter from a prepaid balance.
From your browser to the mailbox.
Write or upload
Type the letter in PostKite or upload the PDF you already have. Add who sends it and who gets it.
We check and price it
The address is checked with USPS and you see the full price before you pay from your balance.
Mail it and keep the proof
Hand it to USPS and record the receipt number. Everything about the letter stays with the letter.
inventory_2Built for the mail that has to arrive.
Certified letter
One or more pages sent as USPS Certified Mail, with the receipt number kept with the letter.
Return receipt
Electronic — USPS emails the delivery record with the signature — or the paper green card.
Address list check
Upload your own list and every address is checked with USPS, priced per address before you run it.
Postcards and campaigns
Marketing postcards from the same mailroom. Not available yet.
Everything about the letter stays with the letter.
One mailroom for your team: what is ready to mail, what is with USPS and what was delivered — with the proof of each piece.
The PDF that was mailed and its SHA-256 fingerprint, taken when the letter is saved.
The Certified Mail number becomes the tracking of the letter.
Written, paid, handed to USPS, delivered or returned — who and when.
PostKite vs the post office counter
| What matters |  | Post office counter |
|---|---|---|
| Waiting in line | check_circleFrom your browser or phone, any time | cancelDuring business hours, in line |
| Forms | check_circleFilled from the letter | cancelCertified mail and green-card forms by hand |
| Price | check_circleLine by line, before you pay | cancelKnown at the counter |
| Proof | check_circleKept with the letter, for the whole team | cancelA paper receipt in a drawer |
| Team and billing | check_circleRoles, one balance, monthly statement | cancelReceipts to reimburse |
Simple, transparent pricing
Start free. Postage is always billed per letter.
Postage is billed per letter: the USPS price of the service you pick plus the PostKite service, always shown before you pay.
One mailroom for the whole office.
Team roles
Senders write and mail, billing sees the money, readers see the proof.
Prepaid balance
One balance for the team; each charge and refund on the ledger.
Monthly statement
Opening, every letter and closing of the month, ready to print.
Printable proof package
The letter, the fingerprint, the receipt number and the steps on one page.
Frequently asked questions
Is it real USPS Certified Mail?expand_more
Yes. The letter travels as USPS Certified Mail; the receipt number and the delivery come from USPS. PostKite prepares the letter, the price and the proof around it.
Do I still go to the post office?expand_more
Today, yes: you hand the letter to the USPS counter and type the receipt number in PostKite. Buying the USPS label inside PostKite is coming next.
How much does a letter cost?expand_more
The USPS price of the service you pick plus the PostKite service. You see the full amount, line by line, before you pay; it leaves your prepaid balance only then.
Who can send?expand_more
You, or the people of your team with the Sender role. Every new account is reviewed by PostKite before its first letter.
What happens if I cancel?expand_more
A letter cancelled before it is handed to USPS returns its full amount to your balance.
What is kept as proof?expand_more
The exact PDF with its fingerprint, both addresses, what was charged, the USPS receipt number and every step with its date, printable at any time.
Send your first certified letter today.
No trip to the post office. The price before you pay. The proof with the letter.
Start free