How to Build a Vendor Onboarding Agent With a Dedicated Email Inbox

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A developer guide published on DEV Community outlines how to build a vendor onboarding automation agent using a dedicated email inbox, such as vendors@yourcompany.com, powered by the Nylas API. The agent is designed to handle repetitive coordination tasks — receiving vendor replies, detecting attachments, matching messages to vendor records, and sending reminders — while keeping sensitive decisions like document validation and vendor approval with human reviewers. The tutorial uses Nylas Agent Accounts, which provide a real mailbox with webhooks, threads, and API access, rather than borrowing an employee's or shared procurement inbox. The guide emphasizes drawing a clear boundary between what the AI agent controls and what must remain under deterministic application logic and human oversight. Code examples using both the Nylas CLI and raw API calls are included to help developers build and debug the workflow in production environments.

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