What is Single Opt-In?
A single opt-in is an easy one-step method for signing up email subscribers. The individual completes a website form, personally requesting to receive email marketing communications. Unlike double opt-in, single opt-in does not require opening an email from the marketer confirming their permission to receive marketing communications from the particular company, or be included in a subscriber list. Single opt-in lists are compiled from users that have signed up to receive emails, as well as others that have signed up individuals without them knowing it.