Regular Cleaning: Routinely clean your email list to remove invalid or outdated addresses. Double Opt-In: Use a double opt-in process to confirm subscribers are genuinely interested. Segmentation: Segment your audience based on demographics, behavior, and interests to send more relevant emails. Verification Tools: Utilize email verification tools to check the validity of email addresses before adding them to your list. Feedback Loops: Implement feedback loops to monitor subscriber engagement and adjust your strategy accordingly.