Getting your IP address whitelisted involves several steps: 1. Request Whitelisting: Contact the ISP or ESP and request that your IP address be added to their whitelist. 2. Authenticate Your Email: Use email authentication methods such as SPF, DKIM, and DMARC to prove that your emails are legitimate. 3. Maintain a Good Sender Reputation: Ensure that you follow email marketing best practices like obtaining permission from recipients, avoiding spammy content, and maintaining clean email lists.