Folders and labels
All messages
No messages match this filter.
Select a message from the list to read it here.
Univik Online MBOX Viewer
100% private. Runs only on your device
Read a Gmail Takeout export, a Thunderbird Inbox or any other .mbox on a Samsung, Pixel or any other Android phone, with nothing installed. The file never leaves the handset.
Or pick it from your device. Messages open in this tab, on your own computer, phone or tablet. Your mailbox is never uploaded.
Gmail on Android cannot open the mailbox it exported, and there is no Thunderbird for phones that reads old profile files. This page turns Chrome into the viewer: pick the .mbox from the phone's storage and read it there, with nothing installed and nothing sent anywhere.
Nothing to install, no permissions to grant and no ads. Chrome or Samsung Internet is all the tool needs.
The Android file picker hands over anything in Downloads, Google Drive, an SD card or a file manager.
The tool reads the file from the phone and nothing is uploaded. Flip on Airplane Mode once the page is up and it carries on working.
An attachment or a message as .eml drops into Downloads, ready for WhatsApp, Drive or any other app.
Short answer: any Android from the last several years with a current browser. Samsung, Pixel, OnePlus, Xiaomi and the rest all use the same file picker.
The message list takes the screen. Tap a message for the reader, swipe through the Headers and Attachments tabs, tap Back to return.
A Galaxy Tab or Pixel Tablet gets the wide layout: labels, list and message side by side, like a laptop.
All four open the file picker and run this tool. Chrome is the one most phones have; Samsung Internet is the default on Galaxy devices and works the same.
Reading happens in chunks, but the message list has to fit the phone's memory. A label export or a single Thunderbird folder is right; a 10 GB archive wants a computer.
Plug into a monitor with DeX or a desktop mode and the page switches to the full three pane layout automatically.
The same parser as on a desktop runs inside the phone's browser, so the tool cuts nothing down for mobile except the layout.
Downloaded your Gmail export on the phone? Open it and the label list is behind the Folders button. Tap a label to narrow the list.
A PDF or photo inside a message opens in its tab and saves to Downloads with one tap, where the Files app and every other app can reach it.
Message-ID, Received and DKIM lines sit in the Headers tab, scrollable sideways, for checking a sender on the move.
Hindi, Tamil, Arabic or Chinese subjects and names show correctly, which matters on phones sold everywhere.
A Thunderbird Inbox copied to the phone has no .mbox ending. The Android picker shows it anyway and the tool opens it.
HTML mail renders with its embedded pictures and remote images wait for a tap, so a mailbox full of newsletters does not eat mobile data.
Download it in Chrome, save it from a mail attachment or make it available offline in Google Drive. It ends up in Downloads or the Drive folder.
Tap Choose .mbox on this phone and the Android picker opens. Browse to Downloads or Drive and tap the mailbox. The list builds on the handset.
Tap a message to read it and use Back for the list. From the reader, an attachment or a message as .eml saves straight into Downloads.
The picker can only hand over what is on the phone or in a synced cloud folder. These are the usual routes.
Request the export at takeout.google.com in Chrome and download the zip. Unzip it with the Files by Google app. The .mbox sits under Takeout and then Mail. Exporting label by label keeps the file phone sized. More on the Gmail Takeout viewer page.
Copy the file over USB or through Quick Share. Dropping it into a Google Drive folder the phone syncs works as well.
Tap the download arrow on the attachment in Gmail or another mail app and it lands in Downloads. Large files download more reliably in Chrome from a link.
The picker shows SD cards and any folder a file manager can see. Use Browse in the picker if the mailbox is somewhere unusual.
On a phone this page is the whole answer. When the archive is huge, or you need search inside every message and printing, the free Univik MBOX Viewer for Windows on a PC handles it.
| Feature | Online viewer on Android | MBOX Viewer for Windows |
|---|---|---|
| Install needed | None, opens in Chrome | 15 MB Windows setup |
| Device | Any Android phone or tablet | Windows 7 to 11 |
| Files uploaded | Never, read from phone storage | Never, runs on your PC |
| Comfortable size | A few gigabytes | No size limit |
| Search | Sender, subject, recipients, labels | Message bodies too |
| Attachments | Save to Downloads | Save anywhere, zip |
| Chrome print to a Wi-Fi printer | Direct printing | |
| Price | Free | Free |
Yes. Open this page in Chrome or Samsung Internet, tap the picker and choose the .mbox from Downloads or Drive. The messages list with their attachments and nothing is installed. The Play Store viewers are optional, not required.
Gmail reads your live account and has no import for mailbox files, on any platform. The export Google gave you is meant for other programs. On a phone, this page is that other program: pick the .mbox and read it in Chrome.
The system picker opens on Recent files. Tap Downloads, Google Drive or Browse in its menu to reach the mailbox. Anything a file manager can see, including an SD card, is available there.
The file streams in pieces, so the limit is the message list, which has to fit in the phone's memory. A label export or one folder of mail is fine. A whole multi gigabyte Takeout is better opened on a computer, where the same page has more room.
Both, and Firefox and Edge as well. Samsung Internet is the default on Galaxy phones and opens the same file picker. The viewer needs only a current browser, whichever brand the phone came with.
No. The tool reads the file from the phone's storage and sends nothing out. Load the page, switch on Airplane Mode and pick the mailbox. It opens the same, and your data plan is not touched either.
Yes. With a message open, switch over to Attachments and tap the file you want. It lands in Downloads like any Chrome download, and the Files app or a share sheet takes it from there. A whole message goes to Downloads as .eml in the same way.
The Android version matters less than the browser, and Chrome updates through the Play Store on almost any phone from the last several years. On a low memory phone stick to small mailboxes, so keep the export modest on older hardware.
No Play Store app, no account. The mailbox stays in your phone's storage and Chrome does the reading.
Pick an .mbox on Android