use Abills::Sender::Core;

  my $Sender = Abills::Sender::Core->new($db, $admin, \%conf);

  $Sender->send_message({
    UID     => 11,
    SUBJECT => 'Hello',
    MESSAGE => 'Hello John',
    SENDER_TYPE => 'Mail',
  });

Web Push

Browser

Telegram

Hyber(GMS - Worldwide)