What email providers does Marco support?

Marco works with Gmail, Outlook, Yahoo Mail, iCloud Mail, and any provider that supports IMAP. Connect all your accounts and manage them from a single inbox.

How does offline access work?

Marco syncs your emails locally to your device. You can read, search, compose, and organize emails without an internet connection. Changes sync automatically when you reconnect.

Yes. Marco is free forever, with no credit card required.

How does Marco protect my privacy?

Marco never scans your emails for advertising. Your data is encrypted at rest and in transit. We have no access to your email content and never sell your information to third parties.

Does Marco use AI to write my emails?

No. Marco does not generate, rewrite, summarize, or reply to email with AI. We believe email should remain a conversation between people.

Which platforms are supported?

Marco is available on macOS and iOS as native apps, with a web version for access from any browser. Windows and Android are on our roadmap.

Do I need a payment method?

No. You can sign up and use Marco without adding a payment method.

GuidesSeptember 29, 2026

Email Clients Without AI: What Each App Does and How to Turn It Off

Isaac Hinman·Co-founder, Marco

The short version

Almost every major email app now summarises, drafts, or replies to email with AI. Most let you turn it off, but the switch is in a different place in each one, and some take more than one setting.

Email client	AI features	Can you turn it off?	Where
Gmail	Gemini summaries and drafting, Smart Compose, Smart Reply	Yes, in two separate settings	Settings > See all settings > General
Outlook	Copilot summaries and drafting	Yes, except in classic Outlook for Windows	Settings or Quick Settings > Copilot
Apple Mail	Inbox summaries, Priority Messages, Smart Replies, Writing Tools	Yes, one feature at a time	Mail > Settings on Mac, Settings > Apps > Mail on iPhone
Spark	Drafting, summaries, translation, AI Assistant	Yes, and it is off by default	Settings > Spark +AI, on each device
Superhuman	Auto Summarize, Instant Reply, Write with AI, Ask AI, Auto Labels	Yes, all at once	Cmd+K > Deactivate Superhuman AI
Marco	No AI drafts, rewrites, summaries, or replies	Nothing to turn off	Not applicable

Gmail

AI features: Gemini summaries and drafting, Smart Compose, Smart Reply
Can you turn it off?: Yes, in two separate settings
Where: Settings > See all settings > General

Outlook

AI features: Copilot summaries and drafting
Can you turn it off?: Yes, except in classic Outlook for Windows
Where: Settings or Quick Settings > Copilot

Apple Mail

AI features: Inbox summaries, Priority Messages, Smart Replies, Writing Tools
Can you turn it off?: Yes, one feature at a time
Where: Mail > Settings on Mac, Settings > Apps > Mail on iPhone

Spark

AI features: Drafting, summaries, translation, AI Assistant
Can you turn it off?: Yes, and it is off by default
Where: Settings > Spark +AI, on each device

Superhuman

AI features: Auto Summarize, Instant Reply, Write with AI, Ask AI, Auto Labels
Can you turn it off?: Yes, all at once
Where: Cmd+K > Deactivate Superhuman AI

Marco

AI features: No AI drafts, rewrites, summaries, or replies
Can you turn it off?: Nothing to turn off
Where: Not applicable

Gmail

Gmail splits its AI across two settings. Smart features in Google Workspace controls Gemini, while smart features in Gmail, Chat, and Meet controls Smart Compose, Smart Reply, summary cards, and inbox categories. Google turns them off by default in the UK, the European Economic Area, Switzerland, and Japan. How to turn off Gemini in Gmail.

Outlook

Outlook has a single Turn on Copilot toggle that follows your account across devices. It is not available in classic Outlook for Windows, where the only fallback also switches off unrelated features. Word, Excel, and PowerPoint each need turning off separately. How to turn off Copilot in Outlook.

Apple Mail

Apple Intelligence adds inbox summaries, Priority Messages, and personalised Smart Replies to Mail, each with its own switch. The Summarize button and Writing Tools only run when you use them. How to turn off Apple Intelligence in Mail.

Spark

Spark +AI is off by default and uses an Azure OpenAI integration when it is on. Its settings do not sync, so you need to check each device. How to turn off AI in Spark Mail.

Superhuman

Superhuman turns its AI features on and off together with one command. While it is on, Superhuman stores Auto Summarize and Instant Reply data for 90 days, and stores your emails with a third-party vendor if Ask AI is enabled. How to turn off Superhuman AI.

Turning it off is not the same as leaving it out

Every switch above is something you have to find and keep an eye on:

Most of these features arrive switched on, and new ones arrive with updates.
Settings are scattered across menus, and some apply per device or per app rather than per account.
Some off switches take other features with them, like inbox categories in Gmail or text predictions in Microsoft 365.

Marco takes the other approach. It does not generate, rewrite, summarise, or reply to email with AI, so there is nothing to find and nothing to switch off. It works with Gmail, Outlook, iCloud, Yahoo, and any IMAP provider, so you can keep your address. For broader comparisons on price, privacy, and offline support, see email client alternatives.

How we keep this page current

We check each app's own help documentation and update this page when its settings change. Last checked: September 2026.