Explanation: In the context of sending unsolicited emails, best practices dictate the importance of capturing explicit consent from users. This means that individuals should knowingly and willingly agree to receive emails from a brand or company, typically through an opt-in mechanism. Explicit consent ensures that recipients are interested in the content being sent to them, which significantly reduces the likelihood of complaints and the risk of emails being blocked by Internet Service Providers (ISPs).

Obtaining explicit consent is not only a best practice but also a requirement under various data protection and privacy laws, such as GDPR in Europe. These regulations mandate clear and affirmative consent for receiving marketing communications, thereby protecting users from unsolicited emails and enhancing the integrity of email marketing practices.

References: Best practices and regulatory compliance guidelines, such as those outlined in GDPR and other email marketing regulations, emphasize the importance of explicit consent in building a healthy email list and maintaining positive engagement with recipients.