When it comes to email marketing, companies and organizations are faced with a choice: Should they use double opt-in or single opt-in when acquiring new email subscribers? Ultimately, email senders have to choose between list size and list quality.
What Is the Difference between Double Opt-In and Single Opt-In?
A popular form of opt-in is called the single opt-in, in which the user agrees to receive an email by simply checking a box, or leaving a pre-checked box checked, or entering their email address when they visit a website. Upon submission, the subscriber immediately begins receiving email marketing messages. With this form of opt-in, people are prone to forget they “asked” to be emailed in the first place and can mark your message as spam. This form of opt-in tends to generate more bounces, blacklisting, spam trap hits, and other nasty stuff that can adversely affect your deliverability rates.
With double opt-in, a new email subscriber signs up on your site and provides...