PieterPost Address Helper is a free Chrome extension designed to simplify the process of sending letters through PieterPost from any website. This tool automatically detects address blocks on web pages, highlighting them for easy access. Users can open the recipient's address directly in PieterPost with a single click, making it an efficient option for those who frequently send mail. Additionally, the extension allows for the selection of text on a page, which can be saved as a temporary message for future use.

The extension enhances usability by creating secure draft links instead of exposing full addresses in the URL, ensuring privacy and security. It also features a context menu option for selected text, providing a quick alternative for cases where automatic detection may fall short. Overall, PieterPost Address Helper significantly reduces the steps needed to transition from finding an address online to composing a letter.