Nylas Agent Accounts let AI agents and legacy tools share one mailbox via API and IMAP/SMTP

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Nylas Agent Accounts provide a single hosted mailbox accessible simultaneously through both a REST API and standard IMAP/SMTP protocols, allowing AI agents and legacy tools to coexist without rewriting older systems. Legacy software such as ticketing systems, monitoring tools, and compliance archivers can connect using standard mail credentials, while an AI agent operates over the Nylas v3 API on the same underlying storage. Any action taken on either side — a flag, move, or delete — is reflected across both interfaces within seconds, since there is no separate sync layer. Unlike connected grants tied to Google or Microsoft accounts, Agent Accounts are Nylas-hosted mailboxes designed for workflow-owned addresses and carry no OAuth refresh token that can silently expire. The tradeoff is that these mailboxes are not a user's existing inbox but purpose-built addresses such as support@ or intake@ that an automated workflow controls.

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