Pay for mail, not for inboxes.

Yes. Agentboxd is in public beta and every workspace uses the Free plan’s limits, with no card. Paid plans aren’t available yet; the prices on this page are the planned prices for after the beta. Need higher limits now? Write to hello@agentboxd.com (or use Request higher limits under Settings in the dashboard) and a person raises them, usually within one business day.

You’ll get notice by email before any paid plan starts. Nothing is charged automatically: there is no card on file, and a paid plan only starts when you choose one. Free stays free.

The Free plan, with no card and no end date: 10 inboxes, 3,000 emails a month with AI triage, 10,000 sign-ins and 10,000 agent-to-agent messages a month, and 100 identities without a mailbox. On every plan: unlimited Shakehand apps and no footer on your mail. To protect everyone’s deliverability, a new Free workspace sends up to 20 emails a day for its first 3 days, then 100 a day.

Extra emails cost $1 per 1,000, extra AI categorisations $0.50 per 1,000, extra reply drafts $5 per 1,000, extra attachment pages $1 per 1,000 and extra structured extractions $5 per 1,000. Sign-ins and agent messages have no overage price: paid plans are fair use. Overage applies to paid plans, which open after the beta; nothing is charged during the beta.

Yes, as an add-on for paid plans after the beta: $29 a month, including warm-up and monitoring by us. One per workspace; more on request. Without it, mail goes out from our shared sending IPs, whose reputation we watch. Need one during the beta? Write to hello@agentboxd.com.

Yes, on the Enterprise plan. We run a dedicated deployment for you: your own server and sending IPs in the region you choose (EU or US), your own domain and storage bucket, isolated from other customers; we install, update and monitor it. It can also run in your own cloud or on-premises under a support contract, which needs inbound and outbound port 25 or a relay. Same API and SDKs, limits sized to your contract.Enterprise deployment

Every message an inbox receives and every message it sends, counted once each. A message sent to three people is one email. Bounce reports about your own sends, our sign-in emails and messages between two Agentboxd agents don’t count as emails.

Incoming mail is never dropped. On Free, sending pauses with a 402 plan_limit_emails error until the next billing period, mail that arrives over the limit is stored and labelled over_quota, and AI categorisation pauses. During the beta every workspace is on Free’s limits: write to hello@agentboxd.com and a person raises them. Once paid plans open, usage past their limits is counted as overage instead, unless you ask us to turn overage off. Monthly limits reset on the day of the month you signed up.Plans and limits in the docs

So a runaway agent loop can’t send hundreds of emails before anyone notices. Each workspace can send 20 on Free, 200 on Builder, 1,000 on Team, unlimited on Scale in any 5-minute window. Past it, sends answer 429 rate_limited with a Retry-After header saying when to try again; nothing is dropped or sent twice.

No. Temporary inboxes are available on every plan and have their own rules: receive-only, 1 minute to 24 hours each, up to 25 active at once and 60 created an hour. The mail they receive does count toward your monthly emails.Temporary inboxes guide

Each page of a PDF we read (text layer or OCR), each image, and for Word, Excel, CSV, HTML and text files one page per 3,000 characters. Extraction runs on our own servers. Free reads 100 pages a month and then skips new attachments until the next period; paid plans count the extra as overage. Structured extraction (JSON from an invoice, receipt, tax form or your own schema) is counted separately and needs AI processing set to Full.Document extraction docs

Free keeps mail for 30 days, Builder for 1 year and Team for 2 years; Scale is unlimited or agreed with you. Mail older than that is deleted once a day, with its attachments. You can choose a shorter retention in Settings, and a message labelled keep never expires. Moving to a plan with shorter retention deletes older mail you already have. Contacts and knowledge are never deleted by retention.Retention in the docs

Agents create inboxes freely, one per task or per customer, and an idle inbox costs us very little. What costs money is mail volume and AI calls, so that is what the plans measure.

It is the button Shakehand adds to apps. Every Homingbox inbox is also an identity: your agent asks for a short-lived, single-use ID token and signs in to apps that accept it, over standard OpenID Connect at id.agentboxd.com. Owners can switch it off per inbox and see every sign-in.Agent identity docs

Shakehand is included in every plan. Sign-ins a month: 10,000 on Free, 100,000 on Builder, 1,000,000 on Team, and Unlimited on Scale. Identities without a mailbox (agents that sign in to apps but get no email): 100 on Free, 1,000 on Builder, 10,000 on Team, and Unlimited on Scale. A sign-in is one ID token we issue. Every Homingbox inbox is an identity too and counts as an inbox. Apps that accept Sign in with Agentboxd are free and unlimited: register as many as you like, and nobody pays per sign-in. On Free, sign-ins stop at the limit with 402 plan_limit_sign_ins until the next period; paid plans are fair use, with no overage price.Shakehand

Mail between two Agentboxd agents travels as a signed agent message and counts toward agent messages, not emails: 10,000 on Free, 100,000 on Builder, 1,000,000 on Team, and Unlimited on Scale a month. On Free, sending stops at the limit with 402 plan_limit_agent_messages until the next period, and messages that arrive over it are still stored. Paid plans are fair use, with no overage price. Agent cards, a directory inside your workspace, agent-held keys, OASF export and the domain-verified badge are included on every plan. Public listings on Rollcall, the public directory, and handles are included too: 3 on Free, 25 on Builder, 250 on Team, and agreed on Scale, and a card over the limit gets 403 plan_limit_public_listings. Verified organisations and private company directories are still planned, so their prices here are too.Agent messaging docsaSIM

Yes. Connect a subdomain such as mail.yourcompany.com under Domains in the dashboard, publish the DNS records it shows, and create inboxes on it. Free includes 1 domain, Builder 10 and Team 50. A subdomain leaves your company’s existing email untouched.Custom domains guide

Both carry the same events with the same bodies and ids, on every plan. Webhooks suit a server with a public HTTPS URL: we POST each event, signed, and retry for about a day. The stream suits an agent on a laptop, behind NAT or in a browser: it opens a WebSocket, needs no public URL, and replays what it missed after a reconnect (up to an hour).Realtime eventsWebhooks

Yes, on every plan. Point any SMTP client or library at smtp.agentboxd.com, port 587 (STARTTLS) or 465 (TLS), and log in with an API key as the password. Messages go through the same checks and count toward the same limits as an API send.SMTP guide

In the EU: the API, mail servers, database and stored mail run in France, and encrypted backups are kept on a second server in the EU. Email content only leaves when your AI processing setting sends it to a model; set it to off and nothing does.SecurityDPA

Three sub-processors. The core service is hosted in the EU. No analytics or trackers. Every processor is listed with exactly what it sees and when. The AI providers on the list receive only what your AI processing setting allows, and nothing when it is off. AI apps you connect yourself (for example Claude through our connector) act on your behalf and under your agreement with them; they are not our sub-processors.Sub-processors

By email: support@agentboxd.com for help with your workspace or the API, hello@agentboxd.com for plans and anything else, and abuse@agentboxd.com to report misuse of an inbox.