If you thought that the double opt-in method is the only form allowed by GDPR, we have some news for you!
First of all, let’s cover the similarities and differences between these 2 methods.
Both methods allow you to grow your email list in a simple and secure way. Why secure? Because both times you receive what you need most in terms of staying GDPR-compliant, which is consent.
Let's clarify that GDPR doesn’t make it mandatory to set up the double opt-in method for collecting email addresses. Actually, GDPR says nothing about single or double opt-in. The only thing that matters is the ability to provide proof of consent.
Using the single opt-in method, you should be able to capture a timestamp of subscriber consent (time, date, location) and the source of the opt-in (website, social media, etc.). Possession of this personal information makes you fully compatible with GDPR opt-in requirements. However, to have a stronger paper trail of the proof of consent, you can enable the double opt-in method—which means that anyone who subscribes will have to confirm their request twice.
Double opt-in is a more advanced way of collecting email addresses, however, it doesn’t make the single opt-in method invalid or improper.