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Keywords for substituting e-mail constituent parts

&pagelevel(4)&pagelevel

E-mail constituent parts are substituted in accordance with the following keywords.

The standard e-mail headers listed below are substituted when they are enclosed in percentage signs (%...%).

You will find the associated description in the following RFCs:

  • RFC 822 or RFC 2822 (standard mail)

  • RFC 1036 (USENET messages)

  • RFC 2045 (MIME messages)

Bcc

Cc

Comments

Date

Encrypted

From

In-Reply-To

Keywords

Message-Id

Received

References

Reply-To

Resent-Bcc

Resent-Cc

Resent-Date

Resent-From

Resent-Message-Id

Resent-Reply-To

Resent-Sender

Resent-To

Return-Path

Sender

Subject

To

Approved

Control

Distribution

Expires

Followup-To

Lines

Newsgroups

Organization

Path

Summary

Xref

Content-Description

Content-Id

Content-Transfer-Encoding

Cte (synonym: Content-Transfer-Encoding)

Content-Type

Mime-Version

Content-Disposition

The e-mail headers are only substituted when the header fields are contained in the e-mail.

The keyword “Text” is substituted with the message body text of the e-mail. The keyword “Header” is substituted with the header lines.

Note also that:

  • All line breaks are removed from the header.

  • No distinction is drawn between uppercase and lowercase.

  • Two percentage signs (%%) are substituted with a single percentage sign (%).

  • A backslash followed by a single quote (\’) and a double quote (”) are substituted with a single quote (’).

Parameters of selected header fields

To facilitate access to selected e-mail headers, the following additional substitutions are made:

Content-Type-Type

The Type field of the Content-Type header

Example:
In the case of Content-Type: text/plain;name="filename.txt", it is text.

Content-Type-Subtype

The Subtype field of the Content-Type header

Example:
In the case of Content-Type: text/plain;name="filename.txt", it is plain.

Content-Type-Name

The name field of the Content-Type header

Example:
In the case of Content-Type: text/plain;name="filename.txt", it is "filename.txt".

Disposition-Type-Name

The Filename field of the Content-Disposition header

Example:
In the case of Content-Disposition: inline; filename="filename.txt", it is "filename.txt".