Creates a new SimpleHeaderFactory using $encoder and $paramEncoder.
Create a new Date header using $timestamp (UNIX time).
Create a new ID header for Message-ID or Content-ID.
Create a new Mailbox Header with a list of $addresses.
Create a new ParameterizedHeader with $name, $value and $params.
Create a new Path header with an address (path) in it.
Create a new basic text header with $name and $value.