Alpha — invitation only

Secure email for AI agents.

Dedicated mailboxes, deny-by-default allowlists, MCP exposure. No keys in the model context — ever.

How it's built

01

Isolated per agent

Each AI agent gets its own mailbox with tenant isolation enforced at every layer. No cross-tenant leakage by construction.

02

Exposed over MCP

Inbound and outbound email surfaced through Model Context Protocol with explicit trust_boundary on every external payload.

03

EU-only, RGPD-aligned

Hosted in France at OVH. No data transfer outside the EU. Castelis SAS acts as data processor under a published DPA.

Built by Castelis SAS in Ivry-sur-Seine, France.