Self-hosted MCP server for Microsoft Exchange - a license for your own server.
Postgate AI as a license running directly on your own Exchange server: the MCP server runs in your environment - operations, data and keys stay with you. Same feature set as the managed variant - 76 tools, per-user permissions, via EWS for Exchange SE, 2019 and 2016 (on-premises and hybrid).
Self-hosted or managed by us - your choice
Self-hosted
The license runs as a service directly on your Exchange server or in your data center. Operations, updates and keys stay with you; nothing runs through our servers.
Managed by us
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 models offer the same MCP server: 76 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. You receive an offer - price on request.
- 2
Install the MCP server
The service is installed in your environment and connected to your Exchange via EWS. Operations and data stay with you.
- 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 or next to your Exchange server. Operations, data and encryption keys stay entirely with you; nothing runs through our servers.
Is there any feature difference from the managed variant?
No. Both offer the same MCP server with 76 tools, per-user permissions and EWS connectivity. The only difference is who runs the server.
What does the self-hosted license cost?
Price on request - depending on the number of users and your environment. Request an offer via 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 the models later?
Yes. Switching between self-hosted and managed by us is possible. Get in touch and we will support the migration.
Request a self-hosted license.
Tell us your Exchange version, deployment model and number of users - you receive an offer. Price on request.