EmailsDaily vs. Inbox Zero
Two focused, layer-over-your-inbox tools: Inbox Zero's open-source assistant with drafting and a broad feature set, and EmailsDaily's AI sorting into categories you define yourself, for connected Gmail and Outlook accounts.
Last updated: July 2026 · Product information is based on publicly available sources and may change.
| Data point | Inbox Zero | EmailsDaily |
|---|---|---|
| Product type | Open-source AI email assistant, layers over Gmail and Outlook | Connected-account AI sorting web app, layers over Gmail and Outlook |
| Open source | Yes, with a self-host option | No |
| AI organization | Auto-labeling with default or custom categories | User-defined plain-English categories |
| AI reply drafting | Yes, drafts in your voice | Yes |
| Feature surface | Broad: drafting, bulk unsubscribe, cold-email blocker, analytics, calendar, chat apps | Focused: AI sorting, prioritization, and reply drafting |
| Starting price | $18 / user / mo Starter (annual billing), no permanent free hosted tier | Free tier; Pro $9 / mo; Business $24 / mo |
Inbox Zero is an open-source AI email assistant that layers over Gmail and Outlook, with auto-labeling, reply drafts in your voice, bulk unsubscribe, a cold-email blocker, and analytics. Of every tool on this page, it is closest to EmailsDaily in architecture: both are a layer over the inbox you already have, not a client replacement. That similarity makes the comparison worth reading closely, since the real differences come down to feature surface and focus, not category.
What Inbox Zero does well
Inbox Zero is open source with a self-host option, and advertises SOC 2 Type 2 certification along with a no-AI-training data claim. Its feature set is broad: drafting, bulk unsubscribe, cold-email blocking, analytics, and on its Plus tier, digests and auto-filed attachments, plus Slack and Telegram access. It also has real social proof, including named logos, a Product Hunt number one placement, and a sizeable GitHub following. For users who want drafting and triage together in one open layer, it is a strong option.
The main difference: broad feature surface vs. focused triage
Inbox Zero's custom categories sit alongside a large surface area, including calendar, CRM, and chat-app integrations, so users who only want sorting may end up paying for breadth they don't use. Its entry price is $18/user/mo on annual billing, twice EmailsDaily's Pro price, and digests plus attachment filing require the $28/mo Plus tier. There is no permanent free hosted tier, only a 7-day trial, since self-hosting is free but a technical undertaking. EmailsDaily takes the narrower path: plain-English custom categories and reply drafting, without the calendar, CRM, or chat-app surface, with a free plan and Pro at $9/month.
How EmailsDaily works
Connect your account
Sign in and connect Gmail, Outlook, or both. Your email stays with your current provider.
Describe your categories
Write categories in plain language, such as "client invoices" or "newsletters I actually read," instead of configuring default labels.
Sort the inbox
EmailsDaily sorts and prioritizes incoming email into those categories, focused purely on triage.
Which fits your workflow?
Choose Inbox Zero if…
- Open source and the option to self-host matter to you.
- You want AI reply drafting bundled with sorting in one layer.
- You also want bulk unsubscribe, a cold-email blocker, and analytics in the same tool.
- The $18/user/mo Starter tier, or higher tiers for digests and attachment filing, fits your budget.
Choose EmailsDaily if…
- You want the same layer-over-your-inbox approach, focused purely on triage.
- Plain-English custom categories are what you need, without a large surface area of calendar, CRM, and chat-app features you won't use.
- You want a lower entry price, at less than half of Inbox Zero's Starter tier, with a free plan to begin.
- You don't need the calendar, CRM, or chat-app integrations Inbox Zero bundles, and would rather pay less for a narrower tool.
Pricing
As of July 2026, Inbox Zero lists Starter at $18 per user per month, Plus at $28 per user per month, and Professional at $42 per user per month, all shown on annual billing; monthly billing is higher, and the annual toggle shows a 10 to 20 percent saving. Enterprise pricing is custom. Inbox Zero offers a 7-day free trial and no permanent free hosted tier, though self-hosting is free. EmailsDaily offers a free tier, with Pro at $9 per month and Business at $24 per month.
Inbox Zero
Frequently asked questions
See your inbox organized by what matters.
Connect Gmail or Outlook and create your first plain-language categories.