There are several methods to verify the authenticity of your subscribers:
Double Opt-In: This involves sending a confirmation email to new subscribers, requiring them to click a link to verify their email address. CAPTCHA: Implementing CAPTCHA during the subscription process can prevent bots from signing up. Email Validation Tools: Use tools to check if the email addresses in your list are valid and active. Behavioral Monitoring: Track engagement metrics such as open rates and click rates to identify inactive or suspicious accounts.