Overview

Welcome to the Astreo documentation. Learn how to set up Astreo, use it as a team and integrate it via the APIs.

What is Astreo?

Astreo is a web-based email client for teams. Several people jointly run mailboxes like info@, support@ or sales@ — with clear ownership instead of CC chaos: conversations get assigned, discussed internally and answered together.

Important: Astreo is a client, not an email provider. Your mailboxes stay where they are (Gmail, Microsoft or any IMAP mailbox) — Astreo simply connects them and lays the team workflow on top. There is nothing to migrate, and your address doesn't change.

Key concepts

• Mailbox (account): a connected email address (e.g. support@company.com). You can connect as many as you like.
• Thread (conversation): a related exchange of several messages — the unit you work with day to day.
• Assignment: a thread gets an owner. "Assigned to me" shows each person exactly their tasks.
• Internal note: a comment right on the thread that only the team sees — never the sender.
• Tag: a label to structure threads, personal or for the whole team.

Who is Astreo for?

For small and medium teams that jointly run central addresses — support, sales, office, accounting. Astreo runs GDPR-compliant in the EU, is open-core and can also be self-hosted. Individual users equally benefit from multi-account, filters, templates and AI assistance.

How this documentation is organised

• Basics & mailbox: signing in, connecting mailboxes, the everyday mail workflow.
• Collaboration: team inbox, roles, assignment, notes, tags.
• Automation & AI: filters, spam protection, AI-assisted drafts.
• Developers: REST API, webhooks and MCP server for integrations and AI agents.

New here? Start with Getting started.