Postmarkr is a web-based direct mail platform that lets businesses send physical mail — postcards, letters, and certified mail — entirely online. Users upload a document or design a postcard, enter a recipient address, and Postmarkr handles printing, postage, and USPS delivery. Postmarkr solves the operational burden of physical mail for small businesses, legal offices, dental practices, property managers, and anyone who needs to send mail without visiting a post office. There are no minimums, no subscriptions, and no contracts — users pay per piece. Key capabilities include a step-by-step mail wizard that walks users through document upload, address entry, mail class selection, and a live preview before sending. Postmarkr supports First-Class Mail, Certified Mail with Return Receipt, and Priority Mail. Postcards are available in three sizes (4x6, 6x9, and 6x11). Letters can be black-and-white or full color, single or double-sided. Every mail piece gets real-time USPS tracking with delivery status updates. For certified mail, Postmarkr provides electronic return receipt confirmation. Users can view their complete mail history, reprint previous mailings, and track delivery timelines from a centralized dashboard. Postmarkr is built for simplicity. There is no software to install, no design skills required, and no bulk minimums. Send one letter or a thousand from the same interface. Pricing starts at $1.50 for a black-and-white letter and $1.00 for a 4x6 postcard, plus postage and a small processing fee. The platform is designed for professionals who need reliable mail delivery with proof of send — attorneys mailing legal notices, dental offices sending patient recall postcards, HOA managers distributing violation letters, and property managers handling tenant correspondence.