Outlook running slower than usual often indicates that your Mailbox has become too large to handle easily. When the Outlook data file exceeds its optimal size, it not only affects performance but also increases the risk of corruption. This is when the need for using the Outlook PST Splitter Tool becomes practical, ensuring both stability in daily email management and speed. https://www.vsoftware.org/blog/outlook-running-slow-how-a-pst-splitter-reduces-file-size-and-prevents-corruption.html