Single opt-in and Dual opt-in, what is the key difference?

[vk_lord]

Just so we’re clear, let me explain the fundamental difference between the two.

A single opt-in is a one-step process and only requires a person to enter their email address one time in the signup box on a website.

No confirmation is required, and they immediately become a subscriber.

A double opt-in involves a two-step process where a person first enters their email in the signup box.

But after that, they receive a confirmation email where they must click to confirm that they want to subscribe before being added to the list.

The key difference is that a single opt-in doesn’t require a confirmation, and a double opt-in does require a confirmation.

Exactly correct. And nicely explained too.

Single opt-in are used by bloggers to build email list and of so. Double opt-ins are for more complex systems such as getting into any service or signing up for a new email account.