Inboxer vs Inbox Zero
Two AI email assistants with similar pitches. Inbox Zero leans on open source and self-hosting; Inboxer leans on consistent human approval and meeting coverage.
| Inboxer | Inbox Zero | |
|---|---|---|
| Price | $19/mo | Free (self-hosted) · from $20/mo cloud |
| Free trial | 7 days | Free self-hosted |
| Works with | Gmail, Outlook | Gmail (Outlook partial) |
| Approval-first |
Competitor prices and feature availability as of August 2026 and may change - check their site for the latest.
The honest version
Inbox Zero (getinboxzero.com) is an open-source AI email assistant. It triages incoming mail, suggests organisation rules and reply automations, and supports self-hosting for full stack control. The code is public on GitHub, which is a strong transparency argument - few competitors offer it.
Inboxer is a SaaS AI chief of staff that sits on Gmail or Outlook. It triages incoming mail into 8 categories with auto-archiving most of the routine noise, drafts replies in your voice, and extracts a task queue from email. Core principle: every AI action is approval-gated - nothing sends without your click.
The honest trade-off: if open source matters and you want the option to self-host, Inbox Zero fits that philosophy. If you want full email + meeting coverage, a SaaS team that runs the infra, and a guarantee that nothing leaves your mailbox without explicit approval, Inboxer is the better fit. Both tools serve a close-by audience but trade off infra control against feature breadth differently.
Feature-by-feature
| Feature | Inboxer | Inbox Zero |
|---|---|---|
| AI triage (auto-categorisation) | 8 categories, most routine noise auto-archived | rules + auto-archive |
| Voice-matched AI drafts | rule-based auto-replies | |
| Approval-gated AI actions | nothing sends without you | configurable |
| Pre-meeting briefs | from Gmail invitation emails, 30 min before | |
| Meeting transcript & summary | optional meeting bot (Recall.ai) | |
| Task extraction into a queue | ||
| Open source / self-hosting | SaaS only | their headline differentiator |
| Works with Gmail | ||
| Works with Outlook | Gmail-first | |
| Starting price | $19/workspace/month (1 user included), 7-day free trial | free if self-hosted; cloud from $20/mo |
Which one is right for you?
Pick Inboxer if…
- You want full email + meeting coverage in a single tool.
- Approval-gated everything is non-negotiable - nothing should send without your click.
- You want briefs BEFORE meetings, not just notes after them.
- You'd rather a SaaS team handle infra, updates, and security than run it yourself.
- Outlook is your primary client and you want parity with Gmail.
Pick Inbox Zero if…
- Open source is a core value - you want to read and audit the code.
- Self-hosting unlocks compliance requirements that SaaS can't meet.
- You don't need meeting coverage; triage + drafts is enough for your day.
- You're comfortable running your own instance and prefer paying only for infra.
Frequently asked questions
- Is Inbox Zero really open source?
- Yes. The code is public on GitHub under a permissive licence. You can fork it, audit it, or self-host. Inboxer is proprietary SaaS - but we publish our security policy and a DPA for the compliance use cases that drive most open-source preference.
- Will Inboxer ever be self-hostable?
- Not on the current roadmap. We bet on SaaS so we can iterate fast on AI models and infrastructure. If self-hosting is non-negotiable for you, Inbox Zero is the option that fits.
- Which tool is cheaper?
- Inbox Zero is free if you self-host (you pay for your own infra and AI hosting). Their cloud starts at $20/month (Starter), $35/month (Plus), $50/month (Professional). Inboxer starts at $19/workspace/month (1 user included) with a 7-day free trial, no card required. Essentially equivalent on price for an individual user.
- Which one works better with Outlook?
- Inboxer treats Gmail and Outlook as equals on the email core - triage, drafts, task extraction, search. Meeting detection is Gmail-first today (on Outlook, invitations relayed as .ics are detected; native detection is in development). Inbox Zero is Gmail-first; check the current state of their Outlook support if Outlook is your primary client.
- Can I import Inbox Zero rules into Inboxer?
- No automatic import today. Inboxer's logic is different: instead of rules you configure, the AI classifier learns from your decisions over time. Start a trial and let the system calibrate over a few days.
Try Inboxer on your real inbox
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