Postmark Postmark is a transactional email service for delivering application-related emails. Developers and businesses use it to send emails like password resets, welcome messages, and shipping notifications. Official docs: https://postmarkapp.com/developer Postmark Overview - Email - Server - Signature Use action names and parameters as needed. Working with Postmark This skill uses the Membrane CLI to interact with Postmark. Membrane handles authentication and credentials refresh automatically — so you can focus on the integration logic rather than auth plumbing. Install the CLI Install the…