Take back control of your inbox
Rules you define sweep newsletters, receipts, and notifications out of Gmail, Microsoft 365, or any IMAP mailbox — every sweep previewed before anything moves. Join the waitlist for the hosted service, or run the free CLI today.
★ Run the free CLI on GitHub →
Your inbox fills faster than you can clean it
Newsletters you never read
Dozens of senders, daily. They pile up faster than you archive them.
Receipts and notifications
Useful for a day, clutter forever. Buried under everything else.
Manual cleanup never sticks
You clear it on Sunday; by Friday it's back. Rules fix that.
How it works
Connect your mailbox
Sign in with Google or Microsoft 365 — no password stored — or connect any IMAP mailbox with an app password, encrypted at rest.
Define your rules
Match by sender or subject. Keep the newest few, or anything from the last week — then delete the rest, file it to a folder, or just get told about it.
Preview, then sweep
A dry run shows exactly what each rule would touch before anything moves. Run it when it looks right, and watch progress live.
Two ways to use Massi
Run it yourself
The open-source CLI runs the same engine on your own machine against Gmail or any IMAP mailbox. Your compute, your cron, fully inspectable.
View on GitHub ↗Let Massi run it
The hosted service keeps your rules running — no machine to keep on. Sign in with Google or Microsoft 365, sweep on a schedule, see who fills your inbox, let AI draft the rules, and drive it all from your AI client over MCP.
Join the waitlistWhat the hosted service adds
Same engine as the CLI. The hosted Massi adds the parts that need a server to be useful — and the screens below are the real app, not mock-ups.
Sweeps that run themselves
Daily on Pro, hourly on Premium. Massi runs your rules against every connected mailbox while you're not looking, and keeps a history of what each run did.
See who fills your inbox
Top senders scans your newest thousand messages and ranks who sends the most, and how recently — the shortlist your first rules come from.
Drive it from your AI client
The hosted MCP server exposes your top senders and your rules to Claude Code and other MCP clients. “Sweep newsletters from these three senders” becomes a rule, without opening the app.
Let AI draft the rules
Massi looks at what actually lands in your mailbox — senders, volume, subjects, recency — and proposes sweep rules you accept, edit, or reject. A monthly allowance is included; bring your own key to lift it.
Simple, capability-based pricing
Hosted tiers are launching soon — join the waitlist to get early access. Paid plans include a 7-day trial; annual billing is ~2 months free.
Free
Get started, no card
- 1 connected mailbox
- Up to 5 sweep rules
- Manual "run now" sweeps
- 30-day lookback
- Community support
Pro
Automate it
- Everything in Free
- 3 connected mailboxes
- Unlimited sweep rules
- Scheduled sweeps — daily
- Full mailbox history
- Standard support
Premium
Let the AI help
- Everything in Pro
- 32 connected mailboxes
- Scheduled sweeps — hourly
- AI rule suggestions for your inbox
- MCP server — top senders + rule editing from your AI client
- Monthly AI usage included · bring your own key to extend
- Reports + export
- Priority support
Prefer to self-host? The OSS CLI is free forever — manual and self-scheduled sweeps, no account needed.
Be first in line
Get early access to the hosted Massi when it launches. No spam, just one heads-up when it's ready.