Have you tried reading the Log::Log4perl documentation? The qw operator is documented in perlop: qw. Importing from modules is documented in perlfunc: use.

Hi afoken, I am not the OP, I was trying to engage the OP and inspire a lightbulb moment ... works better when the OP is around :)

Anyway, changing configuration at runtime is not how you're supposed to work it :)

use Log::Log4perl qw/ get_logger /;
...
get_logger("Winmail")->info("yay!");
...
get_logger("Failmail")->info("boo!");
...
get_logger("Bobmail")->info("get to work!");
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I would like to change the email subject before the program exists now I was able to do it by replacing the Email appender with a new one in the script as shown in the method below. I want to know if its possible to get the existing appender and modify its properties instead of replacing it.

sub update_email_logger {
    my $subject  = shift;
    my $logger   = Log::Log4perl::get_logger();
    my $pattern  = Log::Log4perl::Layout::PatternLayout->new( "%d{yyyy
+-MM-dd HH:mm:ss} %p: %m<br/>" );
    my $appender = Log::Log4perl::Appender->new(
        "Log::Dispatch::Email::MailSender",
        name      => "Email",
        to        => $EMAIL_NOTIFICATION,
        subject   => $subject,
        from      => 'myemail@gmail.com',
        smtp      => $SMTP_SERVER,
        Threshold => 'DEBUG',
    );
    $appender->layout( $pattern );
    $logger->add_appender( $appender );
}
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I would like to change the email subject before the program exists now I was able to do it by replacing the Email appender with a new one in the script as shown in the method below. I want to know if its possible to get the existing appender and modify its properties instead of replacing it.

Sure it is possible -- the docs/faq even explain how -- but this is not the solution you're looking for :)

If you want different emails to get info messages based on something in your code, use a dedicated category/logger like you're supposed want to