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Postmarkr

Send business letters online

Upload a PDF or import a list, and Postmarkr verifies each address with USPS, prints, and mails it First-Class — one letter or a full batch. Follow every piece to the mailbox from your dashboard. No printer, no stamp drawer, no leaving your desk.

Send Your First MailSee what mail costs
Lost in the mail? We resend for free

Four steps, then it's in the mail

Send one letter or a batch. Postmarkr helps you create the mailpiece, verify addresses, review pricing, and follow status updates after mailing.

Create — Upload a PDF, start from a template, or import a CSV
Address — Add recipients and verify addresses
Review & Pay — Confirm the mailpiece and price before sending
Track — Follow status updates after mailing
Start a letter
Create

Comparing Postmarkr with print shops, enterprise mail APIs, or doing it yourself? See which path fits.