Self-hosted MCP server for Microsoft Exchange - a license for your own server.
Postgate AI as a license running on your own Windows server in your network: the MCP server runs in your environment - you keep your data and keys. Same feature set as the fully managed option - 90+ tools, per-user permissions, via EWS for Exchange SE, 2019, and 2016 (on-premises and hybrid).
Self-hosted or fully managed - your choice
Self-hosted
The license runs as a service on your own Windows server in your network or data center. You handle operations and updates and keep the keys; nothing runs through our servers.
Fully managed
We run a dedicated, hardened instance in Germany and handle operations, patching, and monitoring - ready to go with no servers to run yourself. Details and pricing on the pricing page.
Same feature set
Both options offer the same MCP server: 90+ tools for mail, calendar, contacts, and tasks, per-user OAuth 2.0/PKCE, delegated permissions instead of a shared account, connected via EWS.
From license to a self-hosted instance in three steps
You receive the license and set up the MCP server in your own environment - we help with installation and operations.
- 1
Request a license
Tell us about your environment: Exchange version, on-premises or hybrid, number of users. We send you a quote.
- 2
Install the MCP server
The service is installed in your environment and connected to your Exchange via EWS. You keep control of operations and data.
- 3
Connect AI assistants
Users pair their mailbox and connect Claude, ChatGPT, Perplexity, Mistral Vibe, or Copilot Studio - on desktop and mobile.
Frequently asked questions
What exactly does self-hosted mean?
The MCP server runs as a service in your own environment, on your own Windows server next to your Exchange server. You keep full control of operations, data, and encryption keys; nothing runs through our servers.
Is there any feature difference from the fully managed option?
No. Both offer the same MCP server with 90+ tools, per-user permissions, and EWS connectivity. The only difference is who runs the server.
What does the self-hosted license cost?
Contact us for pricing. It depends on the number of users and your environment. Request a quote through the contact form.
Which Exchange versions are supported?
Microsoft Exchange Server Subscription Edition (SE), Exchange 2019, and Exchange 2016 via EWS - on-premises and hybrid.
Can we switch between deployment options later?
Yes. You can switch between self-hosted and fully managed. Get in touch, and we will help with the migration.
Request a self-hosted license.
Tell us your Exchange version, deployment model, and number of users, and we will send you a quote.