lib/Sietima/Role/AvoidDups.pm


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package Sietima::Role::AvoidDups; 
use Moo::Role;
use Sietima::Policy;
use Email::Address;
use namespace::clean;
 
around subscribers_to_send_to => sub ($orig,$self,$mail) {
    my @already_receiving = map {
        Email::Address->parse($_)
      } $mail->header_str('to'),$mail->header_str('cc');
 
    my %already_receiving = map {
        $_->address => 1
    } @already_receiving;
 
    return [
        grep {
            not $already_receiving{$_->address}
        }
            $self->$orig($mail)->@*,
    ];
};
 
1;