Double opt-in signup for Custom signup form

Hi,

Is Double opt-in signup for Custom signup form available now?

There was a closed topic one year ago, where I can find this: “right now it’s not possible, but latter you will be able to create autoresponders for that.”
(https://wordpress.org/support/topic/double-opt-in-signup)

Is this feature available now?

Thanks!

https://wordpress.org/plugins/official-mailerlite-sign-up-forms/