Single opt-in for your Kulea forms allows your form subscriber to validate that they want to receive marketing communication when they submit the form.  

Single opt-in can generate more leads quicker, but they may not be the cleanest leads!

This screenshot shows the single opt-in checkbox on our website form

Double opt-in sends your contact a 2nd email asking them to validate that their email is real before subscribing them to your mailing list.

For more on double opt-in, click here