# Pneumail > Opt-in email for newsletters, product updates and sequences, sent from your own domain through Amazon SES. ## Docs - [Pneumail](https://docs.pneumail.com/): Opt-in email for newsletters, product updates and sequences, sent from your own domain through Amazon SES. ## Tutorial - [Send your first campaign](https://docs.pneumail.com/tutorial/first-campaign): Connect an agent, add a domain, import a list, write, test, schedule and watch a real send. ## Designs - [Designs](https://docs.pneumail.com/design): The main Pneumail screens as clickable mockups with real Front Door content. ## Explanation - [About Pneumail's architecture](https://docs.pneumail.com/explanation/architecture): How Pneumail sends 250,000 opt-in emails a day without duplicates, and why it is built this way. ## Decisions - [ADR 0001: A Postgres delivery ledger](https://docs.pneumail.com/decisions/delivery-ledger): Why every message is a row in one Postgres ledger instead of per-campaign Durable Objects. ## Agent skills - [pneumail](https://docs.pneumail.com/.well-known/agent-skills/pneumail/SKILL.md): Read the Pneumail docs instead of answering from memory. Opt-in email for newsletters, product updates and sequences, sent from your own domain through Amazon SES. Use when a task involves Pneumail: how it works, how to set it up or configure it, or its API. ## Agent resources - [llms-full.txt](https://docs.pneumail.com/llms-full.txt): The full Markdown of every page in one file. - [Page Markdown](https://docs.pneumail.com/index.md): Append `.md` to any page URL to fetch that page as raw Markdown. - [JSON API](https://docs.pneumail.com/api/docs/pages.json): Page index of the JSON docs API; each entry links the page's JSON and Markdown forms. Described by the OpenAPI document at https://docs.pneumail.com/openapi.json. - [Agent skills](https://docs.pneumail.com/.well-known/agent-skills/index.json): Agent Skills discovery index of the skills this site publishes. - [API catalog](https://docs.pneumail.com/.well-known/api-catalog): RFC 9727 linkset of the APIs documented here. - [AI catalog](https://docs.pneumail.com/.well-known/ai-catalog.json): ARD manifest of the agent-facing resources on this site (MCP server, skills, APIs). - [agent-readability.json](https://docs.pneumail.com/agent-readability.json): Manifest of every agent-facing artifact on this site. - [Sitemap](https://docs.pneumail.com/sitemap.xml): Every indexable page URL with its last-modified date.