Send Business Letters Online—Secure, Fast & Hassle-Free
Upload a PDF or import a recipient list. We automatically verify addresses, print, and mail via USPS First-Class. No printer, no stamps, no hidden fees.
Why modern teams switch
The mailroom, automated for the remote and digital era.
Prepare your contracts, invoices, and notices. We handle the printing, envelopes, and mailing.
Zero Inventory Overhead
Never stock paper, custom window envelopes, ink cartridges, or rolls of stamps again.
Address Verification
Recipient and return addresses are checked against USPS data. An undeliverable address is flagged before anything prints.
Document Privacy
Documents are encrypted in transit and at rest. Your documents are processed automatically. We never read or review the content of your mail.
Four steps from upload to delivery
Send one letter or a batch of up to 100 recipients. We handle the printing, USPS address verification, and mailing.
Comparing Postmarkr with print shops, enterprise mail APIs, or doing it yourself? See which path fits.
Frequently Asked Questions
Will my letter actually get delivered?
Every address is verified against the USPS database before we print. USPS scan updates appear in your dashboard when available. If USPS confirms a letter was lost, we'll resend it for free.
How much does it cost — are there hidden fees?
A single-page black & white letter is $2.05 all-in. Color starts at $2.52. The price at checkout is the price you pay — no subscription, no monthly fee, no minimums. When you factor in stamps, envelopes, paper, ink, and your time, you're often spending more to do it yourself.
How long does delivery take?
Printed the next business day following payment. Your letter enters the mailstream by the next business day. USPS estimates 1–5 days for First-Class delivery. USPS scan updates appear in your dashboard when available.
What if something goes wrong — can I get a refund?
Before payment, you can cancel a Draft or Pending Payment mail piece in your dashboard. Because payment has not completed, no refund is needed. Need to stop a letter after paying? Contact support right away and we'll try to catch it before it prints. Once a letter is queued for production it usually cannot be stopped, which is why the preview and total come before payment. If Postmarkr confirms and issues a refund, it returns to your original payment method. Your bank may take 5–10 business days to post it. After printing, refunds are only available for a quality issue, mail confirmed lost by USPS, or an error made by us during processing. If USPS confirms a letter was lost, we'll resend it for free.
What happens to my document after I upload it?
Your document is sent directly to our printing partner. Your documents are processed automatically. We never read or review the content of your mail. Documents are encrypted in transit and at rest. Uploaded documents and generated mailing proofs follow different retention lifecycles.
Send Your First Letter Today
No subscription. Create an account free, then pay only when you send mail.