Clear My Inbox usage stats

What these numbers are

These are totals from Clear My Inbox's own database, summed across every account since launch and read on October 3, 2026. They describe what this one tool has done for the people who used it.

They are not a survey, and they are not an industry study. There is no sampling frame and no control group. Everyone counted here is someone who already believed their inbox needed cleaning and went looking for a tool, which is a very particular slice of Gmail users. Treat the numbers as a description of this product's usage, not as an estimate of what the average Gmail account looks like.

What counts as a deleted email, exactly

A cleanup run matches messages with Gmail search queries, shows you the matches, and then applies one action to everything you approve. The counter goes up by one for each message a run acts on, under whichever action you chose:

• Permanently delete. The message is removed through Gmail's batch delete. It does not pass through Trash and it cannot be recovered.
• Move to Trash. The message gets Gmail's Trash label. It stays recoverable for 30 days, and the space it occupied is not returned until Trash is emptied or those 30 days run out.
• Archive. The message leaves the inbox and nothing is deleted. Archived mail still counts against your storage.

So 747,578 is more precisely “messages acted on” than “messages destroyed”. Most runs use permanent delete, because that is the only action that frees storage straight away, but the total includes trashed and archived mail as well. If a run is configured to empty Trash afterwards, the messages that sweep removes are counted too, including mail that was already sitting in Trash before the run started.

How the 31.3 GB figure is calculated

This one deserves a careful reading, because it is an estimate and not a measurement.

For each cleanup category, the app lists a small sample of the matching messages, reads Gmail's own sizeEstimate for each one, averages them, and multiplies that average by the number of messages in the category. The per-category results are summed into the run's total. Clear My Inbox does not request access to your Google Drive storage quota, so it cannot read your account's storage total before and after a run and subtract the two. Nobody here is watching a quota meter move.

Gmail's sizeEstimate covers the whole raw message: headers, body, and any attachments in their base64-encoded form, which is about a third larger than the original file. That is the right number for storage accounting, since it is roughly what Gmail is actually holding.

Sizes here use binary units, the same ones the app shows you: 1 GB is 1,024 MB. So 31.3 GB is 33,608,119,091 bytes.

The average message is about 44 KB

Divide one headline number by the other: 33,608,119,091 bytes over 747,578 messages is about 44,956 bytes, or roughly 44 KB per message.

Be honest about where that comes from. Because the storage total is built by extrapolating sampled message sizes, this average is a weighted mean of those samples rather than an independent finding. It is a useful order of magnitude, not a precise measurement.

What it does tell you is the shape of the distribution. A plain text or HTML email is usually a few kilobytes to a few tens of kilobytes. A message carrying a photo, a PDF, or a video runs to megabytes. A mean of 44 KB is what you get when a small minority of attachment-bearing mail drags the average far above the median. That is why deleting ten thousand newsletters often barely moves your storage bar, while deleting a few hundred messages with attachments does. If you want to go after the heavy mail yourself, the Gmail storage guide has the search operators for it.

Why 52% is the interesting number

52% of accounts have run more than one cleanup. We think that is the most useful figure on this page, and it is the least flattering to the idea that a full inbox is a one-time problem.

Inbox clutter is a flow, not a stock. A cleanup changes the level; it does nothing to the rate at which new mail arrives. The newsletters you did not unsubscribe from keep sending. Receipts, shipping notifications, calendar invites, and security codes keep arriving at whatever rate they always did. Delete 20,000 messages today and the account starts refilling tomorrow at the same speed it filled before. A repeat rate just over half is what that looks like in the data: people are not fixing a one-time mess, they are doing recurring maintenance.

One caveat worth stating plainly. Clear My Inbox sells a year of unlimited cleanups for a single price, so a second run costs nothing. That removes the main friction against coming back, and the figure would almost certainly be lower if every run were billed separately. 52% measures repeat use under this pricing, not some universal rate at which inboxes need re-cleaning.

Citing these numbers

If any of this is useful to you, here is the version to quote:

Clear My Inbox users have deleted 747,578 emails and freed 31.3 GB of Gmail storage, and 52% of them come back for a second cleanup.

This page is updated in place rather than reissued at a new address, so the link stays good and the snapshot date at the top tells you how current the figures are.

What we are not claiming

• Not that the average Gmail account holds 44 KB messages. That average describes the mail our users chose to clean up.
• Not that 31.3 GB of quota was observed changing hands. It is a sum of estimated message sizes.
• Not that you will recover a particular amount. How much you get back depends entirely on what is in your mailbox, mostly on how many attachments are in it.
• Not that 52% reflects how often inboxes need cleaning in general. It reflects how often our users came back given that returning is free for them.

Run the numbers on your own inbox

The analysis is free and does not require a card. It shows you what is in your mailbox, by category and estimated size, before anything is deleted.