Outlook cache
OSTEML
If you do not need Outlook again, skipping PST avoids an extra Microsoft container. We read the OST in isolation and emit EML messages you can open in other clients or archive as RFC 822 files.
No account on the public uploader. Guest jobs stay within five conversions and 250 MB per day. Business rates start at €0.80/GB for OST → PST.
Describe what you want, then continue to convert.
OST exists because Outlook cached a mailbox. If the destination is Thunderbird, a ticket system, or raw message files, EML is the honest output.
Choose OST to PST instead when a colleague still works in Outlook and needs a single archive file.
The file is identified as OST before extraction. Profile-locked or damaged caches fail with a reason, not a zero-byte zip.
Guest conversion handles a single OST. For a directory of caches, use the Business workspace.
EML is the message. PST also stores Outlook folder metadata. If you only need the mail, EML is enough.
Downloads expire. Keep your own copy; Densem is not an archive host.
Copy the OST while Outlook is closed. A locked live cache may not upload cleanly.
