static void setBouncebackHtml(CommandSender sender, String bounceback) {
HtmlEmail email = htmlEmail.get(sender.getName());
email.setBounceAddress(bounceback);
LogHelper.showInfo("emailBouncebackSet", sender);
htmlEmail.put(sender.getName(), email);
}
@Signature
public PHtmlEmail setBounceAddress(@Nullable String email) throws EmailException {
htmlEmail.setBounceAddress(email);
return this;
}