ZeroMail is a receive only email service that gives AI agents a safe inbox for incoming messages and notifications.

Who should use ZeroMail?

Developers building agents that need to receive codes, receipts, alerts, newsletters, or other automated email.

What does ZeroMail help with?

It supports email reading, searching, webhook and SSE delivery, OTP relay, newsletter monitoring, and event driven workflows.

How much does ZeroMail cost?

The included address and API reads are free, while a nicer address is listed at $1 per month.

What makes ZeroMail different?

It deliberately provides no send or reply API, creating a receive only boundary for agent email workflows.

What should buyers check first?

Check retention, wallet authentication, early access status, API limits, and whether receive only behavior fits the workflow.

ZeroMail

Name: ZeroMail
Brand: ZeroMail

Receive only email infrastructure built for AI agent workflows.

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What is ZeroMail?

TL;DR

ZeroMail is receive-only email infrastructure built for AI agents, providing inboxes, message search, webhooks, and event delivery without send or reply capabilities, creating a narrower security boundary for agent workflows.

Receive only agent inboxes
Email read and search API
Signed webhooks and SSE

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About

ZeroMail is a receive only email service designed specifically for AI agents. It gives an agent an inbox that can receive verification codes, receipts, newsletters, alerts, price changes, and other incoming messages while deliberately removing the ability to send, reply, or compose mail. The service is built around the idea that agents often need to read incoming email but do not need unrestricted outbound email permissions. The workflow is simple: create an inbox, authenticate it using a wallet signature, and let an agent read or subscribe to incoming messages through an API. ZeroMail supports listing, searching, and retrieving messages, along with signed webhooks and server sent events for push delivery. This can support OTP and 2FA workflows, newsletter monitoring, alerts, competitor tracking, receipt processing, and other automations where a new email should trigger an agent action. The core differentiation is the receive only security boundary. By omitting send and reply APIs, ZeroMail reduces the chance that an agent can be tricked into sending unwanted messages or leaking information through email. The product is still in active development and currently offers early access rather than a mature general purpose mailbox service. Buyers should understand the wallet based identity model, retention period, API behavior, and the limits of the current early access product. For FutureStack, ZeroMail belongs in Developer Tools because its primary buyer intent is giving software agents a safe inbound email interface. It is best for verification workflows, notification monitoring, structured email ingestion, and event driven agent automation. Teams looking for a normal human email client should compare it with conventional email products instead.

Use Cases

Inbox Automation

Use AI and structured email workflows to organize incoming messages and reduce repetitive inbox work.

Email Processing

Summarize, extract, and process incoming email content for downstream actions or human review.

Notification Monitoring

Monitor verification codes, alerts, newsletters, and transactional messages as workflow triggers.

Email Security

Keep agent email permissions narrower by separating inbound processing from unrestricted outbound sending.

Key Features

Receive only agent inboxes
Email read and search API
Signed webhooks and SSE
Wallet based authentication

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