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Collaborate with AI agents in your inbox with Spark CLI

Every account. Any agent. Read, draft, and send — your rules, our guardrails.

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  • Editors' Choice

    by Apple

  • 21+ million

    users worldwide

  • 4.8 out of 5

    Mac App Store

  • 4.6 out of 5

    iOS App Store

Works with the agents you already use

Connect to Claude, Cursor, Codex, OpenClaw, Hermes, Google Antigravity, Ollama, and more. Available on Mac and Windows.

Agents that read

Free on every plan. Your agent can read and search everything — and change nothing.

  • Search by meaning

    Ask a real question, not the right keyword. Spark knows what matters and what doesn’t.

  • More than email

    Calendar, contacts, and meeting notes come too — the whole picture, not just the latest message.

  • One tool, every account

    Gmail, Outlook, iCloud, and more — connected once, available together. No separate setup for each provider.

  • You set the access

    Choose which accounts your agent can see. Turn it off whenever you want.

Start with ready-made skills

Adapt our personas and recipes or create your own.

  • Exec Assistant
  • Founder
  • Sales Rep
  • Freelancer
  • Inbox Zero
  • Meeting Prep
  • Vacation Catchup
  • Stakeholder Brief
View the full list on GitHub

See Spark CLI in action

Watch how AI agents can use your inbox context to find answers and get work done.

Agents that act

Build an inbox that runs itself. Let agents organize, draft, and send on your behalf.

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  • A self-organizing inbox

    Archive, label, pin, snooze — the sorting is done before you sit down.

  • Drafts in your voice

    Replies, forwards, and edits, written the way you'd write them — ready when you are.

  • Guardrails

    Approve each message before it goes, or let your agent send on its own. You set the rules.

  • Automate teamwork

    Assign threads to the right person in shared inboxes. Nothing stalls waiting for a forward.

What our users love about Spark

Spark CLI has been a game changer. It's already like somebody's doing my work for me while I'm doing something else.
Shamir Mohideen Construction director
Email is the choking point for me. When you introduced the CLI, that really sealed the deal. I knew this was going to be the center point of my stack.
Richard Walsh Consultant
I can give it much more complicated queries than I could with just the search. Go review this thread and summarize my follow-up reply.
Damen Cole IT services business owner

Works with on-device models and cloud

Spark CLI is a local command-line interface. You choose whether to use a cloud model or keep everything local with an LLM. Set per-account agent access levels, while keeping agents separate from your email, events, and meeting notes.

Power up your workflows with Spark

Free download Buy now