The best Apple Mail alternatives for Mac
Mac mail apps compared on price, the accounts they take, where your mail is processed, and AI. Every fact links to the vendor's own page.
By Emmett Miller
The best Apple Mail alternative depends on why you're leaving. If search can't find your mail and newsletters bury what matters, Alrighty fixes both, with iCloud, Gmail and Outlook in one inbox. If all your mail is Gmail, Mimestream is a native Gmail app for the Mac. If you want the same app on every device, Spark and Canary run on Mac, iPhone, Windows and Android. If you want free and open source, Thunderbird. And if one of your accounts is iCloud, check the accounts column first, because two well-known apps here can't add it.
How we checked
We read each app's own pricing, help and privacy pages on November 3, 2026, and every fact links to the page it came from. We compared what matters when you replace Apple Mail: price, which accounts each app takes, where it processes your mail, and what its AI does. Alrighty is our app, and it's listed first.
What Apple Mail does well, and where it falls short
Apple Mail is a good app. It's free, it adds "iCloud, Gmail (Google), Exchange, school, work, or other" accounts (Apple), and it keeps your mail on your Mac. It lets you unsubscribe from mailing lists "directly in Mail" and block up to 3,000 senders (Apple).
Its weak spot is search. Mail's search depends on your Mac's Spotlight index, and when that index breaks, Mail misses mail you can see. Apple's own fixes run from reindexing Spotlight to rebuilding mailboxes (see Apple Mail search not working). Any alternative should beat Apple Mail at the thing that made you leave. Our best email search apps compare the apps on search alone.
If you'd rather keep Apple Mail and add to it, see our list of Apple Mail plugins. If Apple Intelligence is the part you want to replace, see our Apple Intelligence in Mail alternatives.
The apps at a glance
| App | Price | Accounts | Where your mail is processed |
|---|---|---|---|
| Alrighty | 14-day trial, then Free or Pro | iCloud, Gmail, Outlook | Your Mac |
| Spark | Free; Plus $99/yr, Pro $199/yr | iCloud, Gmail, Outlook, Yahoo, Exchange, IMAP | Spark's servers for some features |
| Mimestream | $49.99/yr | Gmail only | Your Mac |
| Superhuman | From $25/mo, billed yearly | Google and Microsoft 365 only | Not clear from its pages |
| Outlook for Mac | Free for personal accounts, with ads | Outlook.com, Microsoft 365, Gmail, iCloud, Yahoo, IMAP | Not stated |
| Canary Mail | Free; $36/yr or $100/yr | iCloud, Gmail, Outlook, Yahoo, Exchange, IMAP | Your device, except push on phones |
| Thunderbird | Free | Any IMAP account | Your Mac |
Alrighty: best when search and junk are why you're leaving
Alrighty is a desktop mail app for Mac, Windows and Linux that takes the iCloud, Gmail and Outlook accounts you already have and shows them in one inbox. It's built to fix the two things people dislike most about email: mail they never wanted, and search that can't find what they need.
- 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, with its own index rather than Spotlight. You can also ask a question and get the answer, with the emails it came from.
- 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.
- 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. Nothing sends until you click Send. This link to your AI is off until you turn it on with Connect AI.
- Replies in your voice. A draft reply can wait under a message, written the way you write, so you edit instead of starting from nothing.
Where your mail goes. Your mail stays with Apple, Google or Microsoft, and Alrighty keeps and searches its copy on your Mac. Your sign-ins 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. There's no iPhone or web app, and it takes iCloud, Gmail and Outlook accounts only.
Pick it if your mail is spread across iCloud, Gmail and Outlook, you're tired of newsletters and cold email, or you want the AI you already use to work in your inbox.
Spark: best for one app on every device
Spark runs on Mac, iPhone, iPad, Windows and Android, and its free plan lists "Unlimited Email Accounts," a unified inbox and Smart Search (pricing). Plus is $99 a year and Pro is $199 a year. Gatekeeper screens first-time senders so you can accept or block them (Gatekeeper).
Where your mail goes. Spark's privacy page says some features "require our server-side email processing to work," including push notifications. For Gmail, Outlook and Yahoo it stores "an application-specific token." For "AOL, Exchange and custom IMAP accounts, this access token is your email login and password," encrypted in its database.
AI. Spark +AI runs on the Azure OpenAI Service (Spark).
Pick it if you want the same app on every device and you're comfortable with server-side processing. See our Spark alternatives for the details.
Mimestream: best if all your mail is Gmail
Mimestream is a native Mac app built only for Gmail. Its site says it "only stores your data and tokens on your device" and connects "directly to the Gmail API, without going through any intermediary sync service" (Mimestream). Its search uses "the full power of Gmail-backed search."
Price. $49.99 a year for up to five devices, after a 14-day free trial with no credit card (pricing).
What it can't do. It takes Google accounts only, so no iCloud or Outlook. The iPhone and iPad app is in beta.
Pick it if all your mail is in Gmail. If you have iCloud or Outlook too, see our Mimestream alternatives.
Superhuman: best for Gmail or Microsoft 365 at work
Superhuman sells speed, with AI in every plan. Its help center says it "is only able to support Google or Microsoft 365-hosted accounts as of now" (Superhuman), so iCloud is out. Starter is $25 per member a month and Business is $33, billed yearly (plans).
Pick it if you live in Gmail or Microsoft 365 for work and your company pays.
Outlook for Mac: best with a Microsoft 365 work account
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). Personal accounts are free with ads. Work and school accounts need a Microsoft 365 license (Microsoft).
Pick it if your work runs on Microsoft 365 and you want mail and calendar in one app.
Canary Mail: best free app across platforms
Canary runs on Mac, iPhone, iPad, Windows and Android. Its free plan lists "Unlimited Mail Accounts" and a unified inbox, and paid plans are $36 or $100 a year (pricing). It also offers 1-Click Unsubscribe.
Where your mail goes. Canary's privacy policy says your data is "stored on your device and is never transferred to our servers," except for push notifications on iPhone and Android, where it "will temporarily store your email address, credentials."
Pick it if you want a free app with a unified inbox on more than one platform.
Thunderbird: best free, open-source choice
Thunderbird is free, open source and funded by donations. It runs on Mac, Windows and Linux and lets you "manage all accounts separately or in a unified inbox" (Thunderbird). Its privacy notice says your messages "are stored and processed locally on your device and never sent to us" (privacy). It does send Mozilla telemetry about how you use the app.
Pick it if you want free and open source and don't mind setting up iCloud by hand, with its manual setup guide.
How to choose
- iCloud, Gmail and Outlook in one inbox, with less junk and search that works: Alrighty.
- All Gmail, Mac only: Mimestream.
- Gmail or Microsoft 365 at work, and speed matters most: Superhuman.
- The same app on your phone, iPhone or Android: Spark or Canary.
- Microsoft 365 work account with calendar: Outlook.
- Free and open source: Thunderbird, or stay with Apple Mail.
For a side-by-side of the two apps, see Alrighty vs Apple Mail.
Questions
What is the best free alternative to Apple Mail?
Thunderbird is free and open source. Spark and Canary have free plans with paid upgrades, and Outlook for Mac is free for personal accounts, with ads. Alrighty has a Free plan after its 14-day trial.
Which Apple Mail alternatives work with iCloud?
Alrighty, Spark, Outlook, Canary and Thunderbird can add an iCloud account. Mimestream works only with Gmail, and Superhuman only with Google and Microsoft 365. See our best email apps for iCloud Mail.
Which Mac mail apps keep my mail off their servers?
Alrighty keeps and searches your mail on your Mac, and its AI features send only the emails they need to its server. Mimestream says it stores data and tokens only on your device, and Thunderbird says your messages are processed locally. Canary keeps your data on your device except for push on phones. Spark processes some features on its servers.
Why can't Apple Mail find an email I can see?
Mail's search depends on the Spotlight index on your Mac. If the index is incomplete or broken, search misses messages. Our Apple Mail search guide lists Apple's fixes in order.