While personalization can be highly effective, there are common pitfalls to avoid: 1. Over-personalization: Too much personalization can come off as creepy. Balance is key. 2. Inaccurate data: Ensure the data you use is accurate and up-to-date. Sending incorrect personal information can damage your brand’s reputation. 3. Lack of relevance: Personalization should go beyond just using the recipient's name. Ensure the content is relevant and valuable to them.