Honest comparison
SaneBox Alternative: AI Email Triage With a Unified Inbox, Priced Flat
Connect every mailbox you own to one board, in the browser, and let AI read each message to categorize it and flag spam before you open it.
Any IMAP provider · AI category + spam per message · Two-way sync
In short
SaneBox is a filtering service, not an email app. It connects to your mailbox, learns which senders you actually read, and moves the rest into folders like SaneLater and SaneNews, which you then read in Gmail, Outlook, or whatever client you already use. Its plans are Snack, Lunch, and Dinner, sold by how many email accounts you connect: one, two, and four. Inboxes does the AI triage and gives you the place to read the mail, putting every connected mailbox on one board in the browser. If you love your current email app and only want better sorting inside it, SaneBox is the cleaner fit and is cheaper to start. If you are signing in and out of four or five mailboxes, Inboxes replaces that with one board at one flat price.
The difference
Where Inboxes and SaneBox actually diverge
SaneBox and Inboxes are solving the same complaint from opposite ends. SaneBox is deliberately invisible: it hooks into your account on the server, studies which senders you open quickly and which you ignore, and files the unimportant mail into folders that sync everywhere. Because the sorting happens server side, it shows up in every client you own, including the stock Mail app on your phone, with nothing to install. Its feature set is mature and specific: SaneLater for mail that can wait, SaneNews for newsletters, SaneBlackHole for senders you never want to see again, SaneNoReplies for messages you sent that nobody answered, SaneReminders for follow-ups, and a daily digest of what got filed. Fifteen-odd years of tuning shows. The gap is that SaneBox never gives you a place to read. It improves each mailbox individually and leaves them individual, so if you run four addresses you still open four inboxes, each one now tidier. Inboxes takes the other half of the problem: every mailbox you connect over IMAP lands on one board in the browser, and an AI model reads each message as it arrives and assigns it a category, work, personal, receipts, newsletters, notifications, plus a spam verdict. The other real difference is how the bill scales. SaneBox charges by account count, and its top Dinner tier tops out at four accounts. Inboxes charges one flat price per plan regardless of how many mailboxes you connect, which is why people running a handful of domains tend to end up here.
Side by side
Inboxes vs SaneBox
| Capability | Inboxes | SaneBox |
|---|---|---|
| AI sorts incoming mail automatically | Yes | Yes |
| One unified board across every account | Yes | Sorts each mailbox separately, no combined view |
| Is an email app you read mail in | Yes | A filter layer on the client you already use |
| Sorting appears in your phone's stock Mail app | No | Yes |
| Follow-up reminders and sent-with-no-reply tracking | No | Yes |
| Works offline | No | Yes |
| Any IMAP mailbox (Gmail, Outlook, iCloud, own domain) | Yes | Yes |
| Number of mailboxes | Unlimited on every plan | 1, 2, or 4 depending on tier |
| Entry price | $29/mo flat | From about $7/mo (1 account) up to about $36/mo (4 accounts) |
| Trial period | No free plan, no trial | 14-day trial |
Pricing and features verified from each vendor's public pricing page in July 2026, and quoted in the currency the vendor publishes. Both products change, so check the current page before you buy.
// Where SaneBox wins
SaneBox is the better buy for a lot of people and it is cheaper to start, so here is when to pick it. If you have one or two mailboxes, if you genuinely like Gmail or Outlook and do not want to read your mail somewhere else, or if you need the sorting to appear on your phone in the stock Mail app with no new software, SaneBox does all of that and Inboxes does not. Its follow-up reminders and SaneNoReplies have no equivalent on our side. It also works offline, because the filing is real folders in your real mailbox, and Inboxes needs a browser and a connection. And SaneBox starts at roughly a quarter of our entry price. Choose Inboxes when the problem is not just messy mail but too many separate mailboxes, and you want one sorted board that opens on any machine.
FAQ
Questions people ask before switching
What is the best SaneBox alternative?
It depends which half of SaneBox you are replacing. If you want the AI triage plus a single place to read every mailbox, Inboxes is the closest fit, because it sorts and hosts the reading. If you only want server-side filtering inside the email app you already use, Clean Email and the filtering built into Gmail and Outlook are the nearer swaps.
How much does SaneBox cost?
SaneBox sells three tiers named Snack, Lunch, and Dinner, separated mainly by how many email accounts you connect: one, two, and four. Published prices sit around $7, $12, and $36 per month on monthly billing, with annual and two-year billing cheaper, and they offer a 14-day trial before you pay. Check their pricing page before you budget, because the tiers get repriced.
Does SaneBox have a unified inbox?
No. SaneBox improves each mailbox on its own, filing unimportant mail into folders inside that account. If you connect three accounts you get three tidier inboxes, not one combined list. A unified inbox across accounts is the specific thing Inboxes adds on top of the same kind of AI triage.
Is SaneBox worth it?
For one or two heavy mailboxes where the problem is volume rather than fragmentation, most users say yes, and the 14-day trial makes it cheap to find out. It becomes a worse fit as the account count climbs, because pricing is per account and the top tier stops at four. That is the point where a flat-priced unified inbox usually costs less and saves more switching.
Does SaneBox read my email?
SaneBox analyzes message headers and your engagement patterns to decide what to file, and it states that it does not read message bodies. Inboxes takes a different approach and is direct about it: an AI model does read each incoming message in order to categorize it and judge whether it is spam. We do not train models on your mail and we do not use it for advertising. If no automated reading of message content is acceptable to you, SaneBox is the safer design.
Keep comparing
More on running every mailbox from one place
Put every mailbox on one sorted board
Connect your accounts over IMAP and let the AI categorize and de-spam your mail from the first message.