Checkbox does not send "False" value when performed Submit - Asp.net MVC

Question

I have a mvc project in Asp.net core and I’m having problems performing a Submit. Well I "Seto" the properties of my Personal Model.

return new PessoaContatoCorreioEletronicoViewModel
{
    UsarParaNotaFiscalEmitida = false,
    UsarParaOrdemCompra = false,
    UsarParaPedidoVenda = false,
    UsarParaMarketing = false
};

The problem is that when I make a Submit, the class gets NULL... It’s as if Asp.net recognized that no checkbox was checked and set the class to null. If I check at least one checkbox works... Only I would like all checkboxes to assume a FALSE default value so this problem doesn’t happen. How do I?

If I do not select any of the Checkbox:

If I Select at least one of the checkbox:

<a class="dropdown-item" role="menuitem"><input data-plugin="switchery" type="checkbox" data-size="small" class="ckb-usar-nf-emitida" data-val="true" value="true" checked="@(Model.PessoaContatoCorreioEletronicoViewModel.UsarParaNotaFiscalEmitida)" id="PessoaContatoCorreioEletronicoViewModel_@(indice)_UsarParaNotaFiscalEmitida" name="PessoasContatosViewModel[@indice].PessoaContatoCorreioEletronicoViewModel.UsarParaNotaFiscalEmitida" /> Usar para NF Emitida</a>
<a class="dropdown-item" role="menuitem"><input data-plugin="switchery" type="checkbox" data-size="small" class="ckb-usar-ordem-compra" data-val="true" value="true" checked="@(Model.PessoaContatoCorreioEletronicoViewModel.UsarParaOrdemCompra)" id="PessoaContatoCorreioEletronicoViewModel_@(indice)_UsarParaOrdemCompra" name="PessoasContatosViewModel[@indice].PessoaContatoCorreioEletronicoViewModel.UsarParaOrdemCompra" /> Usar para Ordem de Compra</a>
<a class="dropdown-item" role="menuitem"><input data-plugin="switchery" type="checkbox" data-size="small" class="ckb-usar-pedido-venda" data-val="true" value="true" checked="@(Model.PessoaContatoCorreioEletronicoViewModel.UsarParaPedidoVenda)" id="PessoaContatoCorreioEletronicoViewModel_@(indice)_UsarParaPedidoVenda" name="PessoasContatosViewModel[@indice].PessoaContatoCorreioEletronicoViewModel.UsarParaPedidoVenda" /> Usar para Pedido de Venda</a>
<a class="dropdown-item" role="menuitem"><input data-plugin="switchery" type="checkbox" data-size="small" class="ckb-usar-marketing" data-val="true" value="true" checked="@(Model.PessoaContatoCorreioEletronicoViewModel.UsarParaMarketing)" id="PessoaContatoCorreioEletronicoViewModel_@(indice)_UsarParaMarketing" name="PessoasContatosViewModel[@indice].PessoaContatoCorreioEletronicoViewModel.UsarParaMarketing" /> Usar para Marketing</a>
<div class="dropdown-divider"></div>