Files with etf file extension can be found as old e-mail messages in Enriched Text format. It was used before HTML replaced it as main format for electronic communication.

There are 2 other file types using
the ETF file extension!

empty icon.etf - PolyEdit file

empty icon.etf - Enigma Transportable Format

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ETF file extension - Enriched Text Format e-mail message

What is etf file? How to open etf files?

File type specification:

Text file type icon Text file type

The etf file extension is related to Enriched Text, a formatted text format for e-mail, defined by the IETF in RFC 1896.

It was "intended to facilitate the wider interoperation of simple enriched text across a wide variety of hardware and software platforms". Today, enriched text is almost unknown in e-mail traffic, while HTML mail is widely used.

MIME types:
text/enriched

This etf 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: May 3, 2019

Help how to open:

Although somewhat obsolete by today's standard, some email programs may still be able to access these messages.

How to convert:

Some programs may still open *.etf files and possibly export them to other similar formats.

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