vuelidate async validator - how to debounce?
as 'Teddy Markov' said, you could call $v.yourValidation.$touch() on your input blur event. I think it's more efficient way to use Vuelidate.
<input type="email" class="form-control col-md-6 col-sm-12" :class="{ 'is-invalid': !$v.user.email.$anyError }" id="emailAddress" v-model.trim="$v.user.email.$model" @change="delayTouch($v.user.email)" @blur="$v.user.email.$touch()" aria-describedby="emailHelp" placeholder="email@example.com">