is a specialized email delivery service designed specifically for transactional emails . Unlike mass marketing email tools (like Mailchimp or Constant Contact), Postmark focuses on getting critical, time-sensitive emails—such as password resets, order confirmations, invoice notifications, and account alerts—into the recipient’s inbox fast and reliably .
Collecting stamps is called Philately. Collecting is called Marcophily. Marcophiles aren't interested in the stamp's perforations or glue; they care about the ink ring around it. A postmark from a town that no longer exists (a "ghost town" cancel), a ship at sea, or the first day of issue for a stamp can turn a simple envelope into a rare artifact. postmark