Changes

A user defines a pattern for emails that if matched, an action occurs.

A user defines a pattern for emails that if matched, an action occurs.

{{note box|Defining a mail rule that includes characters such as "'''<nowiki>[  $ . , | \{ ^ + ? ( \</nowiki>''' " breaks the sort rules and standard mail delivery in general.  It is necessary to escape these special characters in the mail rules so that the sort rules work correctly. Special characters can be entered but you must verify they do not break mail deliver and work as expected. It is recommended you only use alphanumeric, @ and spaces.}}

{{note box|Defining a mail rule that includes characters such as "'''<nowiki>[  $ . , ' | " \{ ^ + ? ( \</nowiki>''' " breaks the sort rules and standard mail delivery in general.  It is necessary to escape these special characters in the mail rules so that the sort rules work correctly. Special characters can be entered but you must verify they do not break mail deliver and work as expected. It is recommended you only use alphanumeric, @ and spaces.}}

The rule fields are in fact regular expressions compatible with egrep. As a result the above cited characters are interpreted as structure of the language. Refer to "man egrep" for correct syntax. As an example if you want to catch mails with the subject including "[mymailinglist]", your rule will be :

The rule fields are in fact regular expressions compatible with egrep. As a result the above cited characters are interpreted as structure of the language. Refer to "man egrep" for correct syntax. As an example if you want to catch mails with the subject including "[mymailinglist]", your rule will be :