HubSpot: What is Double Opt-In in Email Marketing?

HubSpot just shared another brilliant story:

Are you thinking about the quality of your email list? Or do you want to make sure your subscribers are intending to read the email marketing you send out? You may have found your answer in double opt-in, which is a process that ensures the best experience for your subscribers. Rather than single opt-in, double opt-in offers an extra step in the verification process. To ensure the best results from your email marketing campaigns, keep reading to learn what double opt-in is, and how to set it up. Double Opt-in vs. Single Opt-in In one step, users can subscribe to emails that use single opt-in. This means that the only thing users have to do to subscribe is type their email address into the required field. Single opt-in is helpful for marketing teams that want the process of signing up for automated emails to be as quick as possible.  A

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