Open an MBOX file — no mail client needed
Drop an .mbox file — a Google Takeout export, a Thunderbird archive, an old Unix mailbox — and read and search it on this page. Parsed locally in your browser; it never leaves your device.
Drop the .mbox file — it is read locally, nothing is uploaded.
Browse the message list and open any message with attachments.
Search the whole mailbox by subject, sender, or body text.
Export a single message free, or batch-export with a license.
Open an MBOX file — no mail client needed
The usual advice for an MBOX file is to install Thunderbird, create a profile, add an import add-on, and wait — a lot of ceremony when you just need to find one message in a Gmail Takeout export. Mailward opens the MBOX directly: drop the file, browse the messages, run full-text search, and open attachments, all parsed locally in a Web Worker.
Multi-gigabyte Takeout exports work because the file is streamed in pages instead of loaded whole. Reading and single-message export are free; batch export is the paid step.
Before you trust a mail file to a website
Q. Can it open a Google Takeout Gmail export?
Yes — Takeout's .mbox output is the main thing people open here. Multi-gigabyte exports work because the file is streamed in pages rather than loaded into memory.
Q. Do I need Thunderbird or any mail client?
No. The MBOX is parsed directly in your browser — nothing to install, no profile or import wizard to configure.
Q. Is my mail uploaded to a server?
No. The file is read with the browser's File API and parsed in a Web Worker on your machine. You can go offline after the page loads and keep reading.
Q. Can I convert messages out of the MBOX?
Single-message EML export is free. Batch export of folders or the whole mailbox is part of the one-time Pro license.
Simple, one-time pricing
Opening, reading, searching, and single-message export are free forever. Batch conversion is a one-time unlock — no subscription, no recurring fees.
Everything you need to open and read an archive.
- Open & read PST, OST, MBOX, EML — locally
- Full-text search across every folder
- Export a single message
- Files never leave your device
Unlock batch conversion for good — a single payment, yours to keep.
- Batch-convert whole folders to MBOX or EML
- Export all search results as .eml files in one click
- Extract every attachment to a ZIP
- Lifetime license — no renewals
Other formats & archives
Same local-first engine, every common mail format.