An att file extension is related to ZipLip e-mail secure service.

There are 4 other file types using
the ATT file extension!

att icon.att - AT&T Group 4 bitmap graphics

empty icon.att - Web Form Data

att icon.att - Alphacam lathe tool data

empty icon.att - SeeYou waypoint

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ATT file extension - ZipLip secure e-mail message

What is att file? How to open att files?

File type specification:

Encoded and encrypted file type icon Encoded and encrypted file type

The att file extension is associated with the ZipLip application or service used to secure e-mail files.

The att file stores secured e-mail message. Probably some older format and no longer supported.

This att 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.

Updated: November 16, 2018

Help how to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .att file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

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