The Best iPhone Email Cleaner for Any Inbox — Gmail, iCloud, Outlook, Yahoo & IMAP

You can clean Gmail, iCloud Mail, Outlook, Yahoo, AOL, or IMAP from your iPhone with Phone Diet: Clean Up Storage. The full scan is free, and the first cleanup of up to 1 GB is free. Mail is handled on the iPhone.

Here's how each provider connects, how to sign in, and how a cleanup actually works.

Which email providers does the iPhone Email Cleaner support?

The email cleaner works with Gmail, iCloud, Outlook, Yahoo, AOL, and IMAP. The listing does not describe a sign-in method.

The email cleaner works with Gmail, iCloud, Outlook, Yahoo, AOL, and IMAP. Those same accounts, once you let Settings sync contacts from them, are also how one person ends up listed twice. Cleaning mail does not merge the address book: how to delete duplicate contacts on iPhone.

Why "any inbox" matters more than it sounds

For years, the most-downloaded inbox cleaners worked one of two ways:

1. Gmail-only, because Gmail's API is the easiest to integrate with and Google's OAuth handles auth cleanly.
2. "Connect any email" — but only after routing your messages through a third-party server, where they get indexed and sometimes monetized. That's how some big-name cleaners ended up in trouble for selling inbox data.

Phone Diet includes an email cleaner for Gmail, iCloud, Outlook, Yahoo, AOL, and IMAP. The listing does not describe a sign-in method, a password store, or a backend.

That model is what lets the same app safely cover iCloud, Yahoo, AOL, and arbitrary IMAP hosts. If you've been hesitating to hand a third party the keys to your work inbox, this is the difference that matters.

How the email cleaner fits in

Setup is the same for every provider — only the sign-in step changes. Here's the flow.

1. Install the app

Phone Diet runs on iPhone and iPad (iOS 17.0 or later, or iPadOS 17.0 or later). Similar Photos groups near-identical shots and marks the best one 'Keep'. Duplicates are exact copies. It also finds blurry and dark photos, screenshots, screen recordings, Live Photos, and bursts, and it lists Largest Files. Photos never leave the device. Video compression uses HEVC and can make a video up to 70% smaller. Undo has a countdown, and Recover keeps removed items for 30 days, or 7 or 60. Smart Albums, swipe to sort, and On This Day are included. The full scan is free, and the first cleanup of up to 1 GB is free.

2. Open the Email tab and pick your provider

Phone Diet includes an email cleaner for Gmail, iCloud, Outlook, Yahoo, AOL, and IMAP.

The listing names those providers. It does not describe the sign-in screen.

The full scan is free, and the first cleanup of up to 1 GB is free.

Deleted mail follows that provider's own trash. Gmail, iCloud, Outlook, Yahoo, AOL, and IMAP are the providers the listing names.

iCloud Mail cleanup: the no-API workaround

Cleaning iCloud Mail used to be the worst-case scenario. Apple has never offered a public Mail API the way Google has, so no third-party app could even ask for permission. The workaround is IMAP — the same decades-old protocol Mail.app uses under the hood — combined with an app-specific password.

The email cleaner works with iCloud Mail as well as Gmail, Outlook, Yahoo, AOL, and IMAP. iCloud Mail uses an app-specific password from account.apple.com.

If you've been getting "iCloud storage almost full" warnings, your @icloud.com inbox is a great place to look. Big attachments, years of receipts, and shipping notifications add up faster than you'd think.

Outlook, Hotmail, and Live: one connection, three domains

Outlook is one of the providers the listing names. The listing does not describe a password type or a settings path.

Yahoo, AOL, and the long-tail IMAP world

Yahoo and AOL are both providers the listing names.

IMAP is the provider name the listing uses for other mail hosts. The listing does not describe a port, a default, or a settings screen.

Privacy: what the app sees and what it doesn't

The listing names Gmail, iCloud, Outlook, Yahoo, AOL, and IMAP. It does not describe where credentials are stored, which headers are read, or a disconnect button. The privacy policy is the place for data-handling details.

The App Store listing does not publish scan times, delete times, or unsubscribe counts.

What about Android, Mac, or the web?

Phone Diet runs on iPhone and iPad (iOS 17.0 or later, or iPadOS 17.0 or later). Similar Photos groups near-identical shots and marks the best one 'Keep'. Duplicates are exact copies. It also finds blurry and dark photos, screenshots, screen recordings, Live Photos, and bursts, and it lists Largest Files. Photos never leave the device. Video compression uses HEVC and can make a video up to 70% smaller. Undo has a countdown, and Recover keeps removed items for 30 days, or 7 or 60. Smart Albums, swipe to sort, and On This Day are included. The full scan is free, and the first cleanup of up to 1 GB is free.

FAQ: quick answers

Is the email cleaner free?

The app is free with in-app purchases. The full scan is free, and the first cleanup of up to 1 GB is free. After that, email cleanup is an in-app purchase: Weekly $4.99, Monthly $12.99, Annual Premium $34.99, or Lifetime $59.99.

Will deleting in the app delete on the server?

The listing does not describe whether a delete stays only on the iPhone or also reaches the provider.

Can I undo a delete?

Gmail Auto Clean uses rules, with a 30-second undo on category cleans. The listing does not describe Quick Clean. Deleted mail follows that provider's own trash.

What if I sign out of my Apple ID?

The listing does not describe an account inside Phone Diet or where mail credentials are stored.

Does the app read my mail content?

The listing does not describe which parts of a message the email cleaner reads.

The bottom line

The biggest reason people put off cleaning their inbox is that the right tool didn't exist for the inbox they actually use. If you're on iCloud Mail because you're an Apple person, on Outlook because of work, or on a custom IMAP host because you bought a domain in 2008, you've been left out of the "inbox cleaner" world for years.

Phone Diet runs on iPhone and iPad (iOS 17.0 or later, or iPadOS 17.0 or later). Similar Photos groups near-identical shots and marks the best one 'Keep'. Duplicates are exact copies. It also finds blurry and dark photos, screenshots, screen recordings, Live Photos, and bursts, and it lists Largest Files. Photos never leave the device. Video compression uses HEVC and can make a video up to 70% smaller. Undo has a countdown, and Recover keeps removed items for 30 days, or 7 or 60. Smart Albums, swipe to sort, and On This Day are included. The full scan is free, and the first cleanup of up to 1 GB is free.

The full scan is free, and the first cleanup of up to 1 GB is free. After that, cleaning is an in-app purchase: Weekly $4.99, Monthly $12.99, Annual Premium $34.99, or Lifetime $59.99.