
OpenMail
Email API that gives each AI agent its own inbox and address, with inbound mail delivered as structured data, automatic threading, webhooks, a CLI and a hosted MCP server, and EU data residency on every plan.
Pricing as listed on the vendor site on Nov 10, 2026: free tier Free: €0/month, 3 inboxes, 3,000 emails a month, 3 GB storage, no credit card, 100 sends a day; paid from €9 per month (Pro), 10 inboxes and 10,000 emails, then usage, with a free plan.