Will I get doubled contacts for ActiveCampaign?
Since ActiveCampaign does require leads to be sent only once, we provide a check and send the lead only if it isn't already in the list.
So.. No! :)
Can I select double opt-in when adding new users on ActiveCampaign?
Unfortunately not. We can only add contacts to lists via API, and lists do not support the double opt-in option.
Can I use tag from ActiveCampaign?
Unfortunately Tags are not supported at the moment.