Best email app for iCloud Mail on a Mac

The best email app for iCloud Mail on a Mac is Alrighty if you want unwanted mail gone and search that finds what you remember, Apple Mail if you want free and built in, and Outlook if you also live in Microsoft 365. Spark and Canary suit people who need the same app on their phone too. Airmail suits people who like to customize everything. Thunderbird is the free, open-source pick.

Before you pick, check one thing: not every Mac mail app can add an iCloud account. Mimestream works only with Gmail, Superhuman only with Google and Microsoft 365, and HEY can't check other accounts at all. This page lists which apps can and can't add iCloud.

How we checked

We read each app's own pricing, help and privacy pages on November 2, 2026, and every fact below links to the page it came from. We compared what matters to an iCloud user: whether the app can add iCloud at all, what it costs, where it processes your mail, and what it does about mail you never wanted. Alrighty is our app, and it's listed first.

The apps at a glance

App	Price	Adds iCloud	Where your mail is processed	Unwanted mail
Alrighty	14-day trial, then Free or Pro	Yes, with iCloud, Gmail and Outlook in one inbox	Your Mac	Stop mail, Clean up
Apple Mail	Comes with macOS	Yes, built in	Your Mac	Block Sender, Unsubscribe
Outlook for Mac	Free with ads	Yes	Not stated	Block sender
Spark	Free; Plus $99/yr	Yes	Spark's servers for some features	Gatekeeper
Canary Mail	Free; $36/yr or $100/yr	Yes	Your device, except push on phones	1-Click Unsubscribe
Airmail	Free; Pro by subscription	Yes	Optional privacy mode keeps it on device	Smart inbox
Thunderbird	Free	Yes, as an IMAP account	Your Mac	Filters
Mimestream	$49.99/yr	No, Gmail only
Superhuman	From $25/mo, billed yearly	No, Google and Microsoft 365 only

How any app connects to iCloud Mail

Every app below except Apple Mail reaches iCloud the same way, so it helps to know the rules first. They come from Apple's own pages.

• iCloud Mail works over IMAP and SMTP, not POP. Apple's iCloud Mail server settings page says: "iCloud Mail uses the IMAP and SMTP standards supported by most modern email client apps. iCloud Mail does not support POP." So any app that takes a standard IMAP account can add iCloud. An app that works only through Gmail's or Microsoft's own systems can't.
• You sign in with an app-specific password, not your Apple Account password. Apple's app-specific passwords page says this is "to help make sure that your Apple Account password can't be stored or collected by the app." Your Apple Account needs two-factor authentication to make one.
• Changing your Apple Account password signs every app out. Apple revokes all app-specific passwords when you change or reset it. Each mail app then needs a new one.

To make an app-specific password:

1. Go to account.apple.com and sign in.
2. In Sign-In and Security, choose App-Specific Passwords.
3. Choose Generate an app-specific password, name it after the mail app, and follow the steps.
4. Paste the password into the mail app when it asks for your iCloud password.

You can have up to 25 at once, so give each app its own and remove it when you stop using the app.

Alrighty: best for iCloud, Gmail and Outlook in one inbox, without the junk

Alrighty is a desktop mail app for Mac, Windows and Linux, built around two things most mail apps accept: mail you never wanted, and search that can't find what you need. It takes your iCloud account with an app-specific password, and Gmail and Outlook accounts with their own sign-in, all in one inbox.

• Stop mail. One click ends a sender's mail for good. Alrighty unsubscribes in every way the message offers, moves their mail out of your inbox, and keeps their new mail out too.
• Clean up. It lists the senders you probably don't want, such as scams, cold outreach and newsletters you never open, so you can stop them all at once.
• Search that finds what you remember. Type it in your own words. "When is my flight" finds the airline's confirmation even though it never says "flight". Search runs on your Mac, across every account. Ask a question and you get the answer, with the emails it came from.
• Your AI works in your mail. Claude, ChatGPT's desktop app, Codex, Cursor or a local model can read and search your mail. It can also work in a window of its own while you watch, and nothing sends until you click Send. This link to your AI is off until you turn it on with Connect AI. Our Apple Mail MCP servers list compares other ways to give an AI your iCloud mail.

Where your mail goes. Your mail stays in iCloud. Alrighty keeps its copy and its search index on your Mac, and your passwords stay on your Mac, encrypted with a key from your system's keychain. AI features send only the emails they need to Alrighty's server, which passes them to an AI model (OpenAI's for answers and replies).

Price. A 14-day trial with no card, then a Free plan or Pro.

What it can't do. On a Mac, it needs Apple silicon. It adds iCloud, Gmail and Outlook accounts only. There's no iPhone app.

Pick it if your iCloud inbox is full of mail you never asked for, or you have Gmail and Outlook accounts too and want one place to search them.

Apple Mail: best free, built-in choice

Apple Mail comes with every Mac, and it's the only app here that adds iCloud without an app-specific password, because it signs in with your Apple Account. Apple's guide says you can "add your existing accounts—such as iCloud, Gmail (Google), Exchange, school, work, or other" (Apple).

On macOS 27 it does more than it used to:

• Categories sort your inbox into Primary, Transactions, Updates and Promotions, where available (Apple).
• Unwanted mail: you can unsubscribe from a list "directly in Mail" and block up to 3,000 senders (Apple). For more, see how to stop spam emails and our SpamSieve alternatives.
• Search "can provide search results based on what you mean, not just the words you type" (Apple).
• Apple Intelligence writes a short summary under each unread email and suggests replies, but "is not available in all languages or regions" (Apple). See our Apple Intelligence in Mail alternatives if you want it off or want a different AI.
• Mail Privacy Protection hides your IP address from senders and loads remote content privately (Apple).

What it can't do. Search depends on the Spotlight index on your Mac, and when it breaks, Mail misses email you can see. Our guide to fixing Apple Mail search has the steps.

Pick it if you want free, you use only Apple devices, and search works for you.

Outlook for Mac: best if you also use Microsoft 365

Microsoft's Outlook is free on the Mac App Store and works with "Microsoft 365, Outlook.com (including Hotmail and MSN), Gmail, Yahoo! Mail, iCloud, IMAP, and POP accounts" (Mac App Store). Microsoft says it's "free to use with your personal Outlook.com, Gmail, iCloud, Yahoo, and IMAP accounts" (Microsoft).

Price. Free, with ads. A Microsoft 365 Personal or Family subscription removes them. Work and school accounts need a license from your IT administrator.

What it can't do. Microsoft's feature list shows some features, such as Unsubscribe, only in the new Outlook. Support for legacy Outlook for Mac ended in October 2026.

Pick it if your work runs on Microsoft 365 and you want iCloud in the same app as your work mail and calendar.

Spark: best for the same app on every device

Spark, from Readdle, runs on Mac, iPhone, Windows and Android, and its home page lists iCloud among the accounts it takes (Spark). The free plan includes unlimited accounts. Pricing: Plus is $99 a year and Pro is $199 a year.

Where your mail goes. Some of Spark's features run on its servers. Its privacy page says they "require our server-side email processing to work," including push notifications. For custom IMAP accounts, Spark says the access token it stores "is your email login and password," encrypted in its database, and it calls an app-specific password "a must for iCloud accounts." Use one, never your Apple Account password.

Unwanted mail. Gatekeeper screens first-time senders and lets you block a sender or a whole domain (Gatekeeper).

Pick it if you want iCloud in the same app on your Mac, iPhone and Android phone.

Canary Mail: best free unified inbox across platforms

Canary runs on Mac, iPhone, iPad, Windows and Android, and lists iCloud with Google, Outlook, Yahoo and others (Canary). The free plan includes unlimited accounts and a unified inbox (pricing). Growth is $36 a year and Pro+ is $100 a year, and Canary also offers 1-Click Unsubscribe.

Where your mail goes. Canary's privacy policy says your account details and email content are "stored on your device and is never transferred to our servers." The exception is push notifications on iPhone and Android, where Canary "will temporarily store your email address, credentials" on its servers.

Pick it if you want a free unified inbox on more than one platform.

Airmail: best for customizing everything

Airmail runs on Mac, iPhone, iPad and Vision Pro, and takes "Gmail, iCloud Mail, Exchange, Office 365, IMAP, POP3" accounts (Airmail). The app is free on the Mac App Store, with Pro and an AI Composer as in-app purchases.

Where your mail goes. Airmail offers a privacy mode that will "process all the data locally on your device." It's a setting, so turn it on.

Pick it if you use only Apple devices and want to change how your mail app looks and behaves.

Thunderbird: best free, open-source choice

Thunderbird is free, open source and runs on Mac, Windows and Linux, with "all accounts separately or in a unified inbox" (Thunderbird). Add iCloud as an IMAP account with the server settings from Apple's page above, as Thunderbird's manual setup guide describes.

Where your mail goes. Thunderbird's privacy notice says your messages "are stored and processed locally on your device." It also sends usage data to Mozilla by default, which you can turn off.

Pick it if you want free and open source.

Apps that can't add iCloud

These apps come up in every list of Mac mail apps, but they won't work for an iCloud account:

• Mimestream is built on the Gmail API and works only with Gmail (Mimestream).
• Superhuman "is only able to support Google or Microsoft 365-hosted accounts as of now" (Superhuman).
• HEY is its own email service. Its FAQ says "HEY doesn't support IMAP or POP," so you can forward iCloud mail to it but can't check iCloud from it (HEY).

How to choose

• iCloud plus Gmail or Outlook, less junk, search that works: Alrighty.
• Free and built in, Apple devices only: Apple Mail.
• iCloud next to Microsoft 365 work mail: Outlook.
• iCloud in the same app on your phone too: Spark or Canary.
• Customize everything, Apple devices only: Airmail.
• Free and open source: Thunderbird.

Questions

Can I use iCloud Mail without Apple Mail?

Yes. iCloud Mail works over IMAP and SMTP, so any mail app that takes a standard IMAP account can add it. You sign in with an app-specific password from account.apple.com, not your Apple Account password.

Why does my mail app say my iCloud password is wrong?

Most mail apps other than Apple Mail need an app-specific password, not the password you use for your Apple Account. Make one at account.apple.com under Sign-In and Security. If it worked before and stopped, you may have changed your Apple Account password, which revokes every app-specific password.

Does iCloud Mail support POP?

No. Apple's server settings page says "iCloud Mail does not support POP." Use IMAP (imap.mail.me.com, port 993) for incoming mail and SMTP (smtp.mail.me.com, port 587) for sending.

Which Mac mail apps can't add iCloud?

Mimestream works only with Gmail, and Superhuman only with Google and Microsoft 365. HEY doesn't support IMAP, so it can't check an iCloud account.