Should I use double opt-in when building an email list?
Of course, you should. Double opt-in means you will only communicate with active users because they confirm their email addresses in the second stage of the double opt-in process. Besides, it will improve your sender reputation and help you abide by the CAN-SPAM Act and other anti-spam laws. If you create a free subscription form using SendPulse, it is a double opt-in form by default.