Files with etf suffix 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!

etf file icon.etf - PolyEdit file

etf file icon.etf - Enigma Transportable file

Detailed description

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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: text/enriched

Help how to open ETF files:

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

How to convert file with extension ETF:

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

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