With the latest update, Postmark has added full DMARC support for custom Return-Path domains, enabling users to send fully aligned messages with their domain's security and supervision. The new feature allows users to add a custom Return-Path domain to their emails, ensuring better alignment with DMARC policies and securing email delivery. This move aligns with Postmark's goal of helping users send better emails, as well as its commitment to supporting email authentication methods such as DKIM and SPF. To help users get started with DMARC, Postmark offers a free tool for gathering and analyzing DMARC reports, allowing users to create policies that reject or quarantine non-aligned emails. With this update, Postmark aims to make DMARC more accessible and user-friendly, providing support and guidance to help users implement a DMARC policy and improve the security of their email delivery.