Inbox Zero Review (2026)Open-Source AI Email Assistant From $18
By Daan Haket · Researched and written with an AI assistant · who does what
There is no free plan: the trial needs a card and converts unless you cancel, though the site leads with 'Get started free'.
busy founders, executives and small teams on Gmail or Outlook who want their inbox sorted, replies drafted and newsletters cleared by AI, and who like that the code is open source and can be self-hosted.
you are not allowed to send email content to third-party AI providers and cannot self-host, you use an email provider other than Google or Microsoft, or you want one flat price for many mailboxes.
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Pricing (2026)
✓ Pricing re-verified 15 Oct 2026
Three plans priced per user, plus Enterprise. Plus is $28 annually or $35 monthly: two email accounts per user, an AI meeting notetaker, Slack and app integrations such as Notion and Stripe, email digests, auto-filing of attachments and an unlimited knowledge base. Professional is $42 annually or $50 monthly: team-wide analytics, priority support and a dedicated onboarding manager.
Frequently asked questions
How much does Inbox Zero cost?
Read on 15 October 2026, per user per month: Starter $18 billed annually or $20 monthly, Plus $28 or $35, Professional $42 or $50. Enterprise is quoted. Every plan starts with a 7-day trial that needs a credit card.
Is Inbox Zero free?
Not as a hosted service: there is no free plan, only a 7-day trial that converts to paid unless you cancel. The code is open source, and the home page says you can self-host Inbox Zero, which costs nothing in licence fees but means running it yourself.
Does Inbox Zero send my email to an AI company?
Yes, to provide sorting and drafting. Its privacy policy, read 15 October 2026, says it uses third-party AI services, that those providers may use the data only to deliver the service and may not train on it, and that email content is not kept beyond what a feature needs. Its use of Google data follows Google's Limited Use rules.
Is this a hands-on review of Inbox Zero?
This is a researched assessment, not a hands-on test — where we've used a tool ourselves, we say so explicitly. We name what each tool is good and bad at, and we earn a commission only if you sign up, at no cost to you.
- Read 2026-10-15 in a live browser on getinboxzero.com/pricing with its comparison table and FAQ, the home page, the terms of service dated 16 July 2023 and the privacy policy.
- A dated screenshot of that pricing page, kept on this site as the receipt.
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This is our researched assessment — not a paid placement. The “Visit” links on this page are affiliate links: we may earn a commission if you sign up, at no extra cost to you, and it never changes our take. How we review →