Which email providers and devices does Mocca support?

Mocca works with Gmail, iCloud, Yahoo, and Fastmail over IMAP, and requires macOS on Apple Silicon (M1 or later). Outlook is not yet supported, and Intel Macs and Windows are not supported.

Does Mocca send my email data to any servers?

No. Mocca connects directly to your email provider over IMAP, and there are no Mocca servers, no telemetry, and no account — your email stays on your machine and your provider's servers only.

What can the on-device AI do?

It is a small model running locally that is great at sorting, labeling, and short tasks, but not deep reasoning like GPT-4. You can define rules in plain English, ask questions across your inbox, and chain actions like trash and unsubscribe.

Hacker NewsJun 30, 2026Jun 30, 2026, 19:00 JST

Mocca: Mac email client with on-device AI for inbox sorting

Send on LINE

3 Key Points

What happened
Mocca is a new macOS email client that runs an AI language model locally on your machine to classify mail, curate your inbox, and apply rules you write in plain English. The app connects over IMAP to your existing email provider and requires macOS on Apple Silicon (M1 or later).
Why it matters
Email never leaves your computer — there are no Mocca servers, no telemetry, and no account required. For users concerned about privacy, this means your inbox stays fully under your control while still getting AI-powered sorting and labeling without sending data to the cloud.
What to watch
The on-device AI is a small model optimized for sorting and labeling rather than deep reasoning; the app supports Gmail, iCloud, Yahoo, and Fastmail over IMAP but does not yet support Outlook. First launch downloads the model (~10 GB) once, and reading already-downloaded mail and the on-device AI work offline.

Not sure about something? Ask the AI

Questions and answers are published on this page.

Summaries like this, in your inbox every morning.

Get news like this every morning, free

FAQ

Which email providers and devices does Mocca support?: Mocca works with Gmail, iCloud, Yahoo, and Fastmail over IMAP, and requires macOS on Apple Silicon (M1 or later). Outlook is not yet supported, and Intel Macs and Windows are not supported.
Does Mocca send my email data to any servers?: No. Mocca connects directly to your email provider over IMAP, and there are no Mocca servers, no telemetry, and no account — your email stays on your machine and your provider's servers only.
What can the on-device AI do?: It is a small model running locally that is great at sorting, labeling, and short tasks, but not deep reasoning like GPT-4. You can define rules in plain English, ask questions across your inbox, and chain actions like trash and unsubscribe.

Hacker NewsRead Original Article

Send on LINE

AI news that matters for your work, delivered every morning.

Pick your industry and the AI tools you use, and get news related to your work every day.

Get it free

Free · 30 seconds with Google · unsubscribe anytimeWhat is AIToday? →

Ask AI

Ask AI anything about this article. The AI reads this article, earlier AIToday articles, and Wikipedia, and cites its sources. Q&As are published on this page for other readers too.

Next articleOKX launches AI agent marketplace where bots hire, pay each other