libsieve-php is a library to manage and modify sieve (RFC5228) scripts. It contains a parser for the sieve language (including extensions) and a client for the managesieve protocol. It is written entirely in PHP 8+.
Its value is a list of extensions' name, separated by comma. If a value is preceded with a !, the extension cannot be used together with the extension represented by the value.
add the attribute
requireto theextensiontag.Its value is a list of extensions' name, separated by comma. If a value is preceded with a
!, the extension cannot be used together with the extension represented by the value.