How to Download Your Gmail Data
Last updated: February 11, 2026
Mail Zero analyzes your Gmail metadata from a Google Takeout export. Google Takeout is a free, official Google tool that lets you download a copy of your data from any Google service — including Gmail. This guide walks you through the entire process.
What You'll Need
- A Google account with Gmail
- A few minutes to configure the export
- Time to wait for Google to prepare your file (usually a few minutes to a few hours, depending on mailbox size)
Step-by-Step Instructions
Open Google Takeout
Go to takeout.google.com and sign in with the Google account whose Gmail you want to analyze. You'll see a list of all Google products that have exportable data.
Deselect everything, then select only Mail
By default, Google selects all products for export. To keep things fast and small:
- Click “Deselect all” at the top of the product list.
- Scroll down and find Mail (it's in alphabetical order).
- Check the box next to Mail to select it.
Click “Next step”
Scroll to the bottom of the page and click the “Next step” button. This takes you to the export settings.
Configure your export settings
On the next screen you'll see several options. Here are the recommended settings for Mail Zero:
| Setting | Recommended |
|---|---|
| Delivery method | Send download link via email |
| Frequency | Export once |
| File type | .zip |
| File size | 2 GB (or smaller if your mailbox is small) |
Click “Create export”
Google will begin preparing your export. This can take anywhere from a few minutes to several hours depending on the size of your mailbox. You'll receive an email when it's ready.
You can safely close the page — Google will keep working in the background.
Download your export
When your export is ready, you'll get an email from Google with the subject “Your Google data is ready to download”. Click the link in the email, sign in if prompted, and download the .zip file to your computer.
Upload to Mail Zero
Head back to the Mail Zero home page and drag & drop your downloaded .zip file onto the upload area (or click to browse). Mail Zero will extract the email metadata and show you your analytics in seconds.
Frequently Asked Questions
What is an .mbox file?
An .mbox file is the standard format Gmail uses to store email data. When you download a Google Takeout export of your Gmail, the .zip file contains one or more .mbox files inside it. You can upload either the .zip directly or extract and upload individual .mbox files.
My export file is larger than 500 MB. What do I do?
If your mailbox is large, Google may split the export into multiple files (e.g., takeout-part1.zip, takeout-part2.zip). You can upload any individual part to Mail Zero. Alternatively, go back to Google Takeout and export only specific labels (like Inbox) to get a smaller file.
How long does the export take?
It depends on the size of your mailbox. Small mailboxes (a few thousand emails) usually finish within minutes. Larger mailboxes (tens of thousands of emails) can take a few hours. Google will email you when it's ready.
Is this safe? What data does Mail Zero see?
Mail Zero only reads email metadata: the sender address, the date, and Gmail labels. We do not read email bodies, subjects, or attachments. Your file is processed in server memory and is never stored. For more details, see our Security & Data Handling page.
Can I use this with non-Gmail email?
Yes! If you have an .mbox file from any email client or provider (Thunderbird, Apple Mail, etc.), you can upload it directly. The Google Takeout steps above are specific to Gmail, but the .mbox format is universal.
My export download link expired. What do I do?
Google Takeout download links expire after about a week. If yours has expired, simply go back to takeout.google.com and create a new export. The process is quick to set up.
Ready to see who's flooding your inbox?
Upload your Takeout file →