Pieter Post

What it does

Pieter Post is an online service that lets you send physical letters and postcards without needing stamps, envelopes, or a trip to the post office. You can type a letter directly in your browser or upload a PDF, image, or document. After adding the recipient address and paying online, Pieter Post prints, stamps, and mails the item through the postal network. The service supports single letters, bulk mailings to multiple recipients with personalization, and international addresses. It also offers Mailbook for saving contacts and repeat sending, and an API for programmatic mail. A notable recent addition is PieterPost MCP, which connects AI agents to postal mail, allowing agents to prepare letters, use contacts, upload attachments, create checkout links, and track orders.

Who it is for

Pieter Post is for individuals and businesses who need to send physical mail occasionally or regularly but want to avoid the hassle of traditional mailing. It suits people who have a digital document or message that must arrive as paper—such as signed PDFs, official notices, objection letters, forms, invitations, personal notes, or any correspondence where postal mail feels more reliable than email. The service is also useful for sending letters to inmates, representatives, or international recipients. Developers and AI enthusiasts can use the API or MCP to integrate postal mail into their workflows.

Why it matters

Physical mail remains necessary for many official, legal, and personal communications, but the process of printing, finding an envelope, buying stamps, and visiting a post office is cumbersome. Pieter Post eliminates these steps, making mail as easy as sending a text or email. For businesses, it streamlines sending notices, invoices, or marketing materials. The MCP integration is particularly innovative: it allows AI agents to autonomously prepare and send physical mail, bridging the gap between digital automation and the physical world. This could be valuable for automated customer communications, compliance letters, or any scenario where a paper trail is required.

Launch signal

Pieter Post has been operating for some time, with a functional website and active service. The recent introduction of PieterPost MCP signals a pivot toward AI and developer tools, positioning the company at the intersection of postal mail and artificial intelligence. The service is live and accepting orders, with clear pricing and delivery estimates for multiple countries. The website also mentions an API, a changelog, and partner opportunities, indicating ongoing development.

Brand and naming

The name "Pieter Post" is a playful, memorable brand that evokes the Dutch postal service (PostNL) and the founder's name (Pieter). It is easy to pronounce and spell, and the alliteration makes it catchy. The tagline "Never lick a stamp again" is a clever, nostalgic hook that immediately communicates the value proposition. The brand positions itself as a modern, convenient alternative to traditional mail, with a friendly and approachable tone.