Open an OLM file — without Outlook for Mac
Drop an Outlook for Mac .olm archive and browse, read, and search it right here — on any OS, with nothing installed. The file is parsed on your own machine and never leaves your device.
Drop the .olm file — it is read locally, nothing is uploaded.
Browse the folder tree and open any message with its attachments.
Search across every folder by subject, sender, or body text.
Export one message free, or batch-export with the one-time license.
Open an OLM file — without Outlook for Mac
An OLM is the archive Outlook for Mac exports — and almost nothing else on earth opens one. Windows Outlook cannot read it, Apple Mail cannot import it, and the usual advice is to buy a $40-plus converter or upload your whole mailbox to a stranger's server.
Mailward reads the OLM directly in your browser: folder structure, messages, and attachments, parsed locally in a Web Worker with nothing uploaded. Reading, browsing, and search are free; batch export of folders or search results to open formats is the one-time paid step.
Bring an archive from an old Mac and read it on whatever machine you have today.
Before you trust a mail file to a website
Q. What is an .olm file?
The archive format Outlook for Mac uses when you export a mailbox (File → Export). It is Mac-Outlook-specific: Windows Outlook, Apple Mail, and Thunderbird cannot open it directly.
Q. Is my mailbox uploaded to a server?
No. The OLM is unpacked and parsed in a Web Worker on your own machine via the File API. You can disconnect from the network after the page loads and keep reading.
Q. Can I get messages out of the OLM?
Yes — read any message and export it as .eml for free. Batch export of whole folders or search results to MBOX/EML is part of the one-time Pro license.
Q. Do attachments work?
Yes. Attachments stored in the archive are listed on each message and can be saved individually, or extracted in bulk to a ZIP with Pro.
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.