Postmark Link

This seemingly simple clarification has significant real-world consequences, particularly for legal and tax deadlines. In February 2026, the USPS announced new rules that affect the "postmark date" for legal purposes. The critical change is that a postmark no longer necessarily reflects the date you handed your mail to a postal employee or dropped it in a blue collection box. Instead, most postmarks now reflect the date your item is first processed at a sorting facility. If you drop a mailpiece in a collection box after the last pickup of the day, it might not be processed until the next day, meaning its postmark will show that later date.

The API doesn't stop at sending. It offers powerful features including:

placeholder in the HTML. This tells Postmark exactly where to "inject" the specific template content. Starter Options : You can code your own from scratch or use Postmark Starter Layouts to handle responsive design automatically. 2. Design the Email Template Once your layout is ready, create a for your specific message. Select Layout adding a template , choose the Layout you created in the previous step. Dynamic Variables syntax (similar to Mustache.js ) to insert data dynamically, such as order_id Plain Text Version

The 19th century saw rapid technological advancement. In 1875, the was introduced. This ingenious handstamp combined both functions into a single device, applying a dated postmark and a cancellation "killer" in one motion. The 1870s and 1880s ushered in the era of machine cancellers , which automated the process and allowed for a vast increase in the volume of mail that could be processed. postmark

In 1661, the English Postmaster General, , introduced the first postmark, called the "Bishop Mark." It was a simple, small circle stamped on a letter showing only the day and month of mailing. This was not just about logistics; it was about accountability. Carriers could no longer claim a letter arrived late when the stamp proved it was mailed days earlier. As Bishop himself stated, it was to put upon every letter the day it arrives at the office, "so that no Letter Carrier may dare to detain a letter from post to post, which before was usual".

If you'd like, I can provide a for a specific language or help you set up a webhook handler for bounce notifications. Which part Getting started with Postmark

[Mailing Dropped Off] ──> [Processing Facility] ──> [Mechanical/Manual Postmark Applied] ──> [Legal Proof of Date] Instead, most postmarks now reflect the date your

Time-sensitive codes must arrive within seconds. Why Delivery Speed Matters

During the 19th century, local postmasters in the United States were allowed to carve their own cancellation stamps out of wood or cork. This led to "fancy cancels"—intricate designs featuring stars, animals, faces, and geometric patterns that are highly sought after today. Slogan Postmarks

Defaces the postage stamp to prevent its reuse. It offers powerful features including: placeholder in the

const Postmark = require("postmark");

The earliest semi-automatic mechanical canceler, nicknamed the "Cumming Machine."