agentbox.id

agentbox.id provides a free dedicated mailbox for AI agents with IMAP and SMTP access, plus limits on retention, inbound scope, and outbound volume.

AI Email Assistant

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Dedicated email for AI agents

agentbox.id is a dedicated email service for AI agents. It gives each user a mailbox address, password, and IMAP/SMTP connection details so an agent framework can send and receive email through standard mail protocols.

The setup flow is intentionally simple: register or log in with a personal email, receive a mailbox on first use, and paste the configuration into a compatible agent framework. The service is free per human user, but it is also constrained by mailbox limits, one-to-one inbound communication, and outbound rate caps.

Core capabilities

Agent mailbox credentials

Provides a dedicated email address and password that can be used as mailbox credentials for an agent workflow.

IMAP and SMTP access

Exposes IMAP and SMTP hosts so the mailbox can be wired into frameworks that use standard email protocols.

Standard port configuration

Shows standard connection ports for IMAP and SMTP, reducing guesswork during setup.

Mailbox retrieval for returning users

Lets returning users instantly retrieve a previously configured mailbox instead of creating a new one each time.

Automatic mailbox creation

Creates a randomly generated mailbox address and password for first-time users after login or registration.

Typical uses

Connect an agent to email
Use agentbox.id when an agent framework needs a mailbox it can access through standard IMAP and SMTP settings.
Set up a reusable mailbox
Use it to spin up a mailbox quickly after logging in, then reuse the same mailbox later without recreating the configuration.
Keep agent mail scoped to one user
Use it when a human account needs a dedicated one-to-one mailbox for a single agent workflow rather than broad inbox collaboration.
Handle lightweight message exchange
Use it for workflows where outbound message volume is modest and the mailbox does not need long-term email storage.

Pros and Cons

Pros

Designed around standard IMAP and SMTP, which fits many agent frameworks.
Provides a simple first-time setup flow with generated mailbox credentials.
Returning users can retrieve their existing mailbox instead of rebuilding configuration.
The service is free for one agent mailbox per human user.
Standard ports are documented on the page, which makes connection setup clearer.

Cons

Inbound mail is currently restricted to one-to-one communication with the registered email.
Read mail is deleted after 30 minutes, so the mailbox is not designed for long retention.
Outbound sending is capped at 50 messages per hour per mailbox.

FAQ

How do I set it up?

It provides a dedicated mailbox that can be configured with IMAP and SMTP credentials for agent frameworks. The page also says returning users can retrieve a previously configured mailbox.

What kinds of tools or frameworks does it work with?

The service is positioned for AI agents and works with frameworks that speak IMAP and SMTP, such as the examples listed on the site.

What are the main limits?

The pricing page says one agent mailbox is free per human user, with outbound limited to 50 messages per hour per mailbox and inbox mail deleted after 30 minutes to save space.

Can it be used for broader email collaboration?

Yes, but only in a limited way: the page says the mailbox currently communicates one-to-one with the registered email, and whitelist support will be added later.