OK, some more googling revealed that that encoding method is called "MIME words". That led me to the MIME::Words module. This works: 

    use MIME::Words qw (:all);

    if ($sender =~ /^=\?UTF/i) {
      $sender = decode_mimewords($sender);
    }

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In reply to Re: Module for decoding utf-8 imap headers? by nysus
in thread Module for decoding utf-8 imap headers? by nysus

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