Cleanfox: Spam & Email Cleaner

Review by eFreeware

Cleanfox is a free Android app published by NielsenIQ that sets out to do two jobs: get you off mailing lists you no longer read, and clear out the messages those lists have already left behind. It sits in the productivity category and is built around a single idea, that most inbox clutter comes from subscriptions rather than from real correspondence.

The reason to consider it is the sorting. Cleanfox looks at your subscriptions and arranges them by how often you actually open them, so the ones you never read sit together and can be dealt with as a group rather than one at a time. That is a more useful arrangement than a plain list of senders, because it puts your own reading behavior at the center of the decision.

It is also free in the plainest sense: no ads, no in-app purchases, and nothing in the app gated behind a payment. With more than 10 million installs and a 4.7 average from over 335,000 ratings, it has clearly found a large audience. The developer describes it as a spam blocker as well as a cleaner, and says the app has been used to clean over 30 million emails.

Sorting the subscriptions you never open

The core of the app is a review screen where your subscriptions appear ranked by how often you read them. From there you make a call on each one: unsubscribe, keep the subscription but delete the old messages it sent, or keep both. The developer's framing is that you are deciding what deserves space in your inbox, and the frequency ranking is what makes that decision quick.

The controls are swipes. Swiping one way unsubscribes you and blocks further mail from that sender; swiping the other keeps the subscription. I like that the app reduces a chore that normally means opening a message, hunting for a small unsubscribe link and filling in a form into a single gesture. If you have ever given up halfway through unsubscribing from a dozen newsletters, that difference is the whole appeal.

Because the list is ordered by your reading habits rather than alphabetically or by volume, the senders you are most likely to want gone tend to surface first. The developer says the app groups newsletters automatically, which is what makes that ranking possible in the first place. For someone whose address has been signed up to things over many years, this is the part that turns an intimidating cleanup into a short session.

Clearing out what is already there

Cleanfox handles that side too, letting you delete old messages in bulk rather than selecting them by hand. The app is pitched at people who want the storage back as much as the quiet.

Deleted mail can be brought back right away, according to the developer, through an undo option. That matters more than it sounds, because bulk deletion is exactly the kind of action people avoid for fear of losing something important. Having a way back makes it reasonable to move quickly through a list instead of reading every sender twice.

The most recent update added more detail to the statistics section, covering your cleaning activity and how much space you have freed in your mailbox. That is a small addition, but it gives the cleanup a visible result, which is useful if you want to know whether the effort was worth it or simply like watching a number go up.

One inbox for every account you own

Cleanfox works with Gmail, Outlook, Yahoo Mail, Hotmail, AOL, iCloud, Exchange and IMAP accounts, and you can manage unlimited accounts in one place. That breadth is the practical reason to pick it over cleaning up inside a single mail provider's own tools.

If you have a personal address, an old one you never closed and a work-adjacent account all collecting newsletters, dealing with them separately means repeating the same exercise three times. Running them through one app means one pass, one set of decisions and one place to see the result. The developer's positioning as a spam blocker fits here as well: the point is not only tidiness but reducing the volume of unwanted mail arriving across all of those accounts.

The privacy line is worth repeating because it is unusual for a free tool of this type. NielsenIQ states that Cleanfox is GDPR compliant, follows European privacy standards, and that it does not read or sell your personal emails. That is the developer's commitment rather than something a reviewer can verify, but it is the right thing for them to be explicit about.

What it takes to get going

Setup is a matter of connecting the email accounts you want cleaned, and the app supports the major providers plus IMAP, so most people will find theirs on the list. There is no account limit to work around, which means you can start with the worst offender and add the rest later.

The app is free with no ads and no in-app purchases, so there is no tier to choose and nothing to weigh before connecting an account. It is rated for Everyone and has been on Google Play since early 2017, with the most recent update in September 2026, so it is a long-running app rather than a recent arrival.

The one thing to think about before you start is that the app's usefulness depends on you having subscriptions worth reviewing. It is built around newsletters and recurring senders, so an inbox dominated by personal correspondence or one-off messages gives it less to work with. The sorting by reading frequency is the feature that carries the app, and it needs a body of subscription mail to sort.

An inbox tool for the over-subscribed

The people who will get the most from Cleanfox are those who have spent years handing their address to mailing lists and now open their mail app with a sigh. If the first screen of your inbox is mostly things you did not ask for recently and never read, the frequency ranking gives you a fast way to decide what stays.

It also suits anyone running several addresses at once, since the app covers the common providers and IMAP and lets you work across unlimited accounts together. Someone who wants to reclaim storage without clicking through years of old mail will find the bulk deletion and the undo button more appealing than doing it by hand.

What it is not is a general email client or a tool for organizing correspondence. It is built for subscriptions and the clutter they create, and it does that one job directly. If your mail problem is mostly newsletters and unwanted senders, the approach here lines up well with it.

A free, focused way to take back your inbox

Cleanfox earns a recommendation for anyone whose inbox has become a pile of newsletters. Sorting subscriptions by how often you read them is the right organizing principle, the swipe controls make acting on that list quick, and the undo button removes the fear that usually slows bulk deletion down. Add support for the major providers and IMAP, unlimited accounts, and a genuinely free model with no ads or purchases, and the case is straightforward.

The limits are about scope rather than quality. The app is aimed at subscription mail, so it does less for an inbox that is mostly personal messages.

If you have been meaning to deal with the mailing lists you never open, this is a sensible place to start, and the price of trying it is nothing. Install it, connect the account that bothers you most, and work through the list once. For the over-subscribed, that single pass is likely to be the most useful thing you do with your email this month.

What's new in version 3.30.32-1197

We've updated the statistics section, with more details about your cleaning and the space you've saved in your mailbox.