Files with et3 file extension can be found as recorded delivery data files from Hungarian e-Szigno program.

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ET3 file extension - e-Szigno recorded delivery data

What is et3 file? How to open et3 files?

File type specification:

Various data file type icon Various data file type

The et3 file extension is mainly related to e-Szigno, an electronic signature creation software used in Hungary.

The et3 file contains recorded delivery data from e-Szigno program. No further information could be found.

This et3 file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

Help how to open:

Probably not meant to be accessed by the user.

How to convert:

Probably cannot be converted to anything else.

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