I) What is a Double Opt-In?
A double opt-in is an approval procedure in email marketing. It ensures that people do not receive unwanted e-mails. The procedure is as follows: a person subscribes to an e-mail newsletter or similar and then receives an e-mail in which they must explicitly agree to receive e-mails, usually by clicking on a link. Only then are e-mails sent to them.
II) Tips and tricks
1. motivate your viewers to confirm the double opt-in!
In the double opt-in e-mail, prominently indicate that the access data for the webinar will not be sent until the e-mail address has been confirmed.
2. Explain the double opt-in procedure on the thank you page after registering for the webinar!