Created for the comfort of your subscribers.
Many web sites that work on https already use subscription widgets so their users are getting used to it. Usually, it’s a special type of dialog window. For the user, it's easy and quick to understand what is needed and make a decision.
Now the Native subscription widget is available to use even without SSL.
Just set up and chose “Native widget”
In every browser, this widget looks different but it shouldn't bother you, it's not your job to set it up, it's will be chosen automatically. Just turn on the widget and it will be automatically shown in every browser as it should be. The only thing you need to chose — when it will be shown again if the user declined subscription at first.
And of course, you’re always allowed to set up triggers for widgets.