Best inbox zero app, and how to stay at zero

The best inbox zero app is Alrighty if you use iCloud, Gmail or Outlook on a computer and your inbox keeps filling up with mail you never wanted: it archives in one key, clears the backlog in one pass, and stops unwanted senders so the mail doesn't come back. Superhuman is the pick for speed on Gmail or Microsoft 365, with snooze and reminders built in. Spark has free snooze and Mark as Done on every device. SaneBox keeps your current mail app and moves low-priority mail out for you. Inbox Zero, the product with the method's name, is the open-source pick for Gmail and Outlook. Apple Mail is the free choice, with Remind Me built in.

Inbox zero means an inbox with nothing in it that still needs you. Every email has been answered, archived, deleted or set aside for a set time. Most lists that rank for this search judge apps on how fast you can triage. Speed gets you to zero once. It doesn't keep you there, because the same newsletters, receipts and cold pitches arrive again tomorrow. An inbox stays at zero when three things work: one key to clear a message, a place to put mail you can't deal with yet, and a way to stop the mail that refills it. This page compares each app on all three.

This page is about emptying the inbox. For sorting mail into categories and folders, see our email organizer apps. For AI that decides what can wait, see the AI email triage tools.

How we checked

We read each vendor's own product, pricing and help pages on November 4, 2026, and every fact about another product links to its source. For Alrighty, we read our own code. For each app we noted how you clear a message, whether it can snooze, how it handles a backlog of old mail, and how it stops the mail that keeps coming. We did not test the apps. Alrighty is our app, and it's listed first.

Inbox zero apps at a glance

App	Price	Accounts	Clear a message	Snooze for later	Clear the backlog	Stop the inflow
Alrighty	14-day trial with no card, then Free or Pro	iCloud, Gmail, Outlook	Archive, E on an open message	No	Archive everything older than a date	Stop mail, Clean up, Filters
Superhuman	$25 a member a month, billed yearly	Gmail, Microsoft 365	Shortcuts; Auto Archive	Yes, plus Remind Me	Not stated on the pages we read	Unsubscribe, Block, Auto Archive
Spark	Free; Plus $99 a year	iCloud, Gmail, Outlook, Yahoo, IMAP	Mark as Done, swipe on iPhone	Yes, free	Not stated	Gatekeeper screens new senders; block a sender
SaneBox	From $7 a month	Gmail, Microsoft 365, iCloud, Yahoo, IMAP	In your own mail app	Yes	Moves low-priority mail to SaneLater	BlackHole a sender
Inbox Zero	App free; AI from $18 a month billed yearly	Gmail, Outlook	In its free mail app	Not stated	Bulk archive	Bulk unsubscribe, cold email blocker
Apple Mail	Comes with macOS	Any account in Mail	Archive or delete	Remind Me	Not stated	Unsubscribe, block up to 3,000 senders

"Not stated" means the vendor's pages we read don't say. It does not mean the app can't.

What keeps an inbox at zero?

Getting to zero is a one-time cleanup. Staying there is a daily habit, and the app decides how much work that habit takes.

• One key to clear a message. When you've read an email and need nothing more from it, it should leave the inbox in one key or one click. Archive keeps it, and search still finds it. Delete sends it to Trash.
• A place for mail you can't deal with yet. Snooze takes an email out of the inbox and brings it back at a time you pick. Without snooze, mail you can't act on stays in the inbox, and zero never comes.
• A way to stop the inflow. Most of a full inbox is mail no one needs to answer: newsletters, promotions, notifications and cold pitches. Archiving it every day is the same work every day. Unsubscribing, blocking or filtering it means it never arrives.

A backlog of thousands of old emails is a fourth problem, and a one-time one. Don't read them. Archive everything older than a few weeks, and let search find the one you need later.

Alrighty: best inbox zero app for iCloud, Gmail and Outlook

Alrighty is a desktop mail app for Mac, Windows and Linux that puts iCloud, Gmail and Outlook accounts in one inbox. It's built on the idea that you shouldn't archive the same sender every day. It stops the mail that refills the inbox.

• Clear in one key. Press E on an open message to archive it. In the list, check rows, Shift-click a range or check all, then click Archive or Delete. Edit, Undo puts it back.
• Clear the backlog. Review your Inbox has Archive old mail, which archives everything older than a date you pick. By default it keeps unread mail and mail from people you've written to. Archive by custom description finds mail you describe in your own words, from the last 90 days, with AI.
• Stop mail. One action ends a sender's mail. It unsubscribes every way the message offers, archives their mail, and moves their new mail out as it arrives.
• 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.
• Filters. Some mail comes from a new sender each time, like cold sales, so Stop mail can't catch it. Describe that kind of mail, or set rules, and new Inbox mail that fits moves to Archive before your Inbox shows it. Mail from people you wrote to is never moved.
• Search that finds archived mail. Search runs on your computer and matches meaning as well as words: "when is my flight" finds the airline's confirmation. That makes archiving safe.

Where your mail goes. Your mail stays with iCloud, Google or Microsoft, and Alrighty keeps its copy and search index on your computer. Archive, delete, rules and search run there. Clean up, described filters and archive by description use AI: they send only the emails they need to Alrighty's server, which asks a model. Clean up sends each sender's address and up to 3 of their newest emails. Signed out, nothing goes to Alrighty's server.

Price. A 14-day trial with no card, then a Free plan or Pro. Free has a small monthly AI allowance.

What it can't do. It has no snooze or Remind Me, so an email you can't deal with yet stays in the Inbox. There's no iPhone or web app, so you can't clear mail from your phone. It takes iCloud, Gmail and Outlook accounts only, not Yahoo, Fastmail or other IMAP. It has no calendar. It's a new app with no long track record.

Pick it if your inbox refills with mail you never asked for, and you want it stopped instead of archived every day.

Superhuman: best inbox zero app for speed on Gmail and Microsoft 365

Superhuman is a mail app built around the keyboard. Its mail page offers "Fly through emails with shortcuts" and "Snooze emails until the right time" (Superhuman). Split Inbox lets you "Split out emails from your team, your VIPs, or your most used tools," so you clear one stream at a time.

Snooze and reminders. Its plan table lists Snooze and Remind Me, and Auto Reminders among its AI features (plans). When you send an email, you pick a time, such as 2 days. "If you don't hear back by then, we'll remind you to follow up."

Stopping the inflow. The plan table lists Unsubscribe and Block, and Auto Archive, which archives marketing, cold pitches and social updates into an Auto Archived view (Superhuman).

Price. Starter is $25 a member a month and Business is $33, both billed yearly. Each plan bundles Mail, Grammarly, Docs and Go.

What it can't do. It's "Built for teams that use Gmail or Outlook," so no iCloud, Yahoo or other IMAP. See our Superhuman alternatives.

Pick it if you're on Gmail or Microsoft 365 and want to clear mail as fast as you can type.

Spark: best free inbox zero app across devices

Spark runs on Mac, iPhone, iPad, Windows and Android, and takes iCloud, Gmail, Outlook, Yahoo and IMAP (Spark). Its free plan includes "Essential Email Productivity," and its plan table lists Snooze, Set Aside, Reminders and Mark as Done under Essentials (pricing).

• Clear a message. Mark as Done clears it. On iPhone, swipe actions let you "Quickly process emails on iOS with customizable swipe actions."
• Snooze. "Snoozing an email removes it out of your sight completely and makes it reappear in your inbox at a specific time," with options "like 'This Weekend' or 'Next Month'" (Spark).
• Stopping the inflow. Gatekeeper lets you "Screen and block emails from unwanted senders," and Group by Sender will "Bundle emails from preferred senders for easy access" (Spark).

Price. Free, with Plus at $10 a month or $99 a year and Pro at $20 or $199.

Where your mail goes. Spark says some features "require our server-side email processing to work" (privacy). Our Spark alternatives page covers what that means.

Pick it if you want snooze and a done button for free, on your phone as well as your Mac.

SaneBox: best for inbox zero in the mail app you already use

SaneBox isn't a mail app. It sorts your mailbox on its own servers, so it works with whatever app you read mail in, on every device. "SaneBox works wherever you check your email. Nothing to download" (SaneBox).

• Clear the inflow for you. It moves mail it thinks can wait out of the inbox, to a folder called @SaneLater. "The Daily Digest is a daily summary of unimportant emails that haven't been opened yet."
• Snooze. "Snooze sends emails away until you're ready for them. Like on Monday morning, instead of Saturday night."
• Stop a sender. "Use BlackHole to remove them from your inbox for good."
• Reminders. "Get a Reminder if someone doesn't respond to your email by a certain time."

Where your mail goes. "We only access the envelope and header data associated with your emails," unless you opt in to its AI features (privacy).

Price. Plans "start at just $7 per month" (SaneBox), with "a 7-day free trial for each plan." No free plan.

What it can't do. SaneLater is a folder you still have to check, so the mail moves rather than stops. See our SaneBox alternatives.

Pick it if you want to keep your mail app and have the low-priority mail moved out before you look.

Inbox Zero: best open-source inbox zero app for Gmail and Outlook

Inbox Zero is a product as well as a method. It "organizes your inbox and calendar, drafts replies in your voice, and helps you reach inbox zero fast" (Inbox Zero). Its code is on GitHub.

• A free mail app. "Every Gmail and Outlook account in one inbox, on the web, Mac, Windows, and iPhone."
• Stop the inflow. "See which emails you never read, and one-click unsubscribe and archive them." Starter also blocks cold email.
• Clear the backlog. Its plan comparison lists Bulk archive (pricing).
• Rules in plain English. "Configure everything in plain English."

Price. The mail app is free. AI plans start with Starter at $18 a user a month billed yearly, or $20 monthly, with a 7-day free trial.

Where your mail goes. It reads "Email content, metadata (sender, recipient, subject lines, timestamps, folders/labels), and email account settings" (privacy).

What it can't do. Gmail and Outlook only. Its pages we read don't describe snooze.

Pick it if you want bulk unsubscribe and AI rules on Gmail or Outlook, and value code you can read or host.

Apple Mail: best free inbox zero app on a Mac

Apple Mail comes with macOS and takes iCloud, Gmail, Exchange and other accounts (Apple).

• Remind Me. Control-click a message, choose Remind Me, and pick a time. Apple's guide says the reminder moves the message back to the top of your inbox at that time (Apple).
• Stopping the inflow. Mail lets you unsubscribe from mailing lists "directly in Mail" and block up to 3,000 senders (Apple).
• Categories. It sorts mail into Primary, Transactions, Updates and Promotions. Our organizer guide covers them.

What it can't do. Search depends on your Mac's Spotlight index and can miss mail you can see. Our Apple Mail search guide has the fixes.

Pick it if you want free and built in, and you'll unsubscribe one message at a time.

What about Gmail on the web?

Gmail has snooze built in. "When you snooze an email, the email is removed from your inbox temporarily in Gmail. Your email comes back to the top of your inbox when you want it to" (Google). Its category tabs and filters do the rest. It covers Gmail accounts only, and Google has no Mac app; see our guide to Gmail apps for Mac.

How to choose

• iCloud, Gmail or Outlook, the inflow stopped instead of archived every day: Alrighty.
• Clearing mail at keyboard speed, Gmail or Microsoft 365: Superhuman.
• Free snooze and a done button, on every device: Spark.
• Keep your mail app and have low-priority mail moved out: SaneBox.
• Open source, bulk unsubscribe, Gmail or Outlook: Inbox Zero.
• Free and built into the Mac: Apple Mail.
• A backlog of tens of thousands of emails: see our guide to bulk deleting email.

To see how Stop mail, Clean up and Filters work, read Alrighty's features.

Questions

What is inbox zero?

Inbox zero is an inbox with nothing in it that still needs you. Each email is answered, archived, deleted or snoozed to a set time. The goal is not an empty folder for its own sake, but knowing that nothing in it is waiting on you.

Should I archive or delete emails to reach inbox zero?

Archive. Archived mail leaves the inbox but stays searchable, so you lose nothing. Delete only what you'll never need, such as old promotions. Deleted mail goes to Trash, and Trash doesn't keep it for good.

How do I get to inbox zero with thousands of emails?

Don't read the backlog. Archive everything older than a few weeks in one pass, then deal with what's left. Alrighty's Archive old mail does this and keeps unread mail and mail from people you've written to. Then stop the senders that filled the inbox, or it fills again.

Why does my inbox fill up again after I reach zero?

Because the same senders keep writing. Archiving their mail clears it for a day. Unsubscribing, blocking or a filter stops it arriving. Our list of the best apps to unsubscribe from emails explains which one works when.

Is the Inbox Zero app the same as the inbox zero method?

No. Inbox zero is a way of handling email that any app can support. Inbox Zero, at getinboxzero.com, is one product named after it: an open-source AI assistant and mail app for Gmail and Outlook.