ZFO (Proof of Delivery) File

Unknown

archive

This variant of ZFO file is container for proof of delivery of data mailbox messages provided by Česká pošta, s.p. in three versions: 1. proof of delivery; 2. confirmation of delivery; 3. delivery failure. ZFO file is a ZIP archive file (PKCS #7 Cryptographic Message File) composing of the layout structure using XML elements. The whole structure is always embedded into a digital signature represented by XML elements of the XML Signature standard.

Identify it

Extensions	`.zfo`
MIME types	`application/vnd.software602.filler.form-xml-zip`
PRONOM	`fmt/1245`
Wikidata	`Q83795552`

Not sure your file is this? Identify it from its first bytes, in your browser.

Open it

602PC Suitewrites

Convert it

No conversion recorded. One of the tools above may export it; search for a chain.

Sources

PRONOM fmt/1245
Wikidata Q83795552

From PRONOM, Wikidata. Updated 2026-10-20.

Improve this record JSON