Sendmux
An email inbox API for AI agents to send, receive & route.
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June 29, 2026
Launching Sendmux: the email API for AI agents.
Give every agent a real inbox, plus outbound sending through Gmail, Outlook, SMTP, or managed Amazon SES.
It handles:
Agent mailboxes
Sending and receiving
Webhooks and live inbox events
MCP, SDKs, and CLI
Multi-provider routing, quotas, and failover
Built for teams moving AI agents from demo to production.
#AIagents #EmailAPI #DeveloperTools #SaaS #MCP
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