- Ensure Redundancy: Have backup servers to handle email traffic if the primary server goes down. - Optimize Performance: Regularly update and maintain your email server to handle high traffic efficiently. - Authenticate Emails: Properly configure SPF, DKIM, and DMARC records to improve email deliverability. - Monitor Blacklists: Regularly check if your server's IP address is on any blacklists and take steps to get it removed if necessary.