RAID configurations can significantly improve the performance of email servers. For example, RAID 0 (striping) splits data across multiple disks, allowing for faster read and write speeds. This can be particularly beneficial when dealing with large email lists and high traffic volumes. On the other hand, RAID 10 (a combination of RAID 1 and RAID 0) offers both speed and redundancy, making it an excellent choice for high-performance email servers.