Add email to your Vercel AI app

PostNuvia is the fastest way to give a Vercel AI agent its own email inbox. Every user or agent gets a dedicated inbox, created programmatically from any Next.js route.

PostNuvia is a native integration on the Vercel Marketplace

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[ Install ]

One command

The PostNuvia TypeScript SDK works seamlessly in Next.js API routes and serverless functions. Add email to any Vercel-hosted AI application in minutes.

Configure (credentials, email channel, verification)

[ Why email ]

Why your Vercel agent needs its own inbox

PostNuvia is the first email provider built for AI agents.

Multi-tenant by default

Create one inbox per user, per agent session, or per customer. PostNuvia handles the namespace - you just pass a username. No DNS config, no email provider setup.

Works in serverless and Edge

The PostNuvia SDK makes standard HTTPS requests. It works in Vercel serverless functions, Edge functions, and App Router route handlers without modification.

Programmatic inbox creation

Create 1,000 inboxes in a loop or create them on-demand when users sign up. There's no manual setup, no form to fill out - just an API call.

[ Code ]

Working code

[ Builder ]

Looking for inspiration?

Jam with our agent builder. Describe what you want and it gives you a working template in seconds, with the exact instructions to hand your agent.

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[ FAQ ]

FAQ

Common questions about PostNuvia and Vercel.

Yes. The PostNuvia TypeScript SDK works in any Node.js or Edge environment. Use it in Next.js API routes, route handlers, server actions, or as a tool in the Vercel AI SDK.

Yes. PostNuvia is designed for programmatic inbox creation at scale. Create one inbox per user on signup, or on-demand per agent session. Each inbox is isolated and has its own email address.

Yes. The PostNuvia SDK makes standard HTTPS requests with no native dependencies. It is compatible with Edge runtimes.

Register a webhook endpoint pointing to your Vercel deployment. PostNuvia will POST to it whenever a new email arrives. Your Next.js route handler processes it in real time.

Yes. On the Developer plan and above, you can configure custom domains. Inboxes on your domain look like agent@yourcompany.com instead of agent@postnuvia.com.

Gmail API requires OAuth and was built for human accounts, not programmatic agent use. SendGrid handles sending only - no receiving, no threading, no reply parsing. PostNuvia gives your Vercel agent a dedicated inbox it can create on demand, send from, receive on, and read - with full thread context and no credential sharing.