Open-source AI assistant.
Or MCP-native, at half the price.
Inbox Zero (getinboxzero.com) is the closest tool to CME on features — AI triage, bulk unsubscribe, and reply drafting, and it's open source, which earns real trust. The differences: CME is MCP-native (your existing AI client is the interface), covers 8 providers including IMAP (Outlook coming soon), and starts at $9/mo versus their $18.
MCP-native, $9, multi-provider.
Your AI (Claude, Cursor, ChatGPT) is the interface — 208 tools against your real inbox across 8 providers (Outlook coming soon).
Open-source AI email app.
AI triage, bulk unsubscribe, reply drafting in its own app. Open source with a large community — inspect the code yourself.
Which one is right for you?
- ›You already live in an MCP client and want your inbox exposed there — no separate app.
- ›You use providers beyond Gmail and Outlook (iCloud, Fastmail, Proton, IMAP).
- ›Price matters: $9/mo entry vs $18/mo.
- ›Open source is a requirement — you want to read or self-host the code.
- ›You want a dedicated email-assistant app with its own UI, not an AI-client integration.
- ›Their triage/reply-drafting workflow fits how you already work.
- ›Feature-wise these overlap heavily — running both usually isn't worth it; pick by interface preference.
- ›If you're evaluating, test the same cleanup task in each — the workflows feel very different.
12 rows. Every cell sourced.
Model
App vs connector.Capability
Closest feature overlap in this category.Pricing
Published tiers.Side by side.
Inbox Zero's hosted plans run $18, $28, and $42 per month; self-hosting the open-source code is also an option. CME is $0/$9/$25 with MCP included on every tier.
- Free2 inboxes, 25K-email scans, simulation-only$0
- Pro5 inboxes, 25K cleanup actions/mo$9/mo
- Power10 inboxes, 150K cleanup actions/mo$25/mo
- BasicHosted$18/mo
- PlusHosted, more features$28/mo
- ProHosted, full feature set$42/mo
Inbox Zero is the strongest feature comparison in this category and open source earns trust. CME's case is concrete: MCP-native, more providers, half the entry price.
Feature-wise, Inbox Zero is the nearest tool to CME. Pick by interface: their app, or your AI via MCP.
Plug your real inbox in.
Free tier ships read-only access. No credit card. Connect Gmail, iCloud, or any IMAP account in under a minute (Outlook coming soon).