Using double opt-in verification significantly reduces the likelihood of emails being flagged as spam for several reasons. First of all, a double opt-in confirms the validity of the subscriber’s email address, ensuring that messages are sent to active and engaged users. This practice also minimizes the chance of fake or mistyped email addresses entering the mailing list, which can trigger spam filters. Finally, double opt-in demonstrates a clear consent from the recipient, enhancing sender credibility and trustworthiness in the eyes of email service providers.
The second step of the opt-in can be a welcome or confirmation email, with a link that the users need to click on to complete the subscription, or a checkbox. If you’re using one of the emailing and newsletter services like Mailchimp or Constant Contant, you will find double opt-in among the features.
