Since you are interested in marketing (I am assuming, since you a reading this article), you probably are aware of the EU GDPR privacy rules that go into effect on May 25, 2018 and if you are not aware then you can check out more about this gdpr double opt in here if you wanted.
If you use Google Analytics, you’ll want to read this article published by Orbit Media:
What data is affected by the data retention controls in Google Analytics?
If you do not update your data control settings before May 25th to “Do not automatically expire”, you will lose all non-aggregate data prior to March of 2016.
Any US consumer marketers who keep data on their clients/customers also need to heed the privacy rules or face a potential fine. I’m sure that there are plenty of brand managers scrambling right now to learn and analyze the information they have on their clients. For more information on how the GDPR privacy rules in Europe applies to US companies, read this article posted by CNBC.
If you run your website using WordPress, you may be wondering about if your website will be GDPR compliant. Here’s info that I found on this topic from WPBeginner.com that provides info on a post called the Ultimate Guide to WordPress and GDPR
The good part is that if you’re using WordPress plugins like WPForms, Gravity Forms, Ninja Forms, Contact Form 7, etc, then you don’t need a Data Processing Agreement because these plugins DO NOT store your form entries on their site. Your form entries are stored in your WordPress database.
Simply adding a required consent checkbox with clear explanation should be good enough for you to make your WordPress forms GDPR compliant.