Reader Susan Swartz has tired of reading the same messages over and over. She writes: What’s the current best way to find duplicate mail messages? Great question. Let me rephrase it so that the answer ...

If you sync Outlook with your smartphone, Google, and other devices and services, it's not uncommon to end up with duplicate items -- contacts, appointment listings, and so on. Unfortunately, finding ...

When you're working with a spreadsheet, duplicate data can sometimes make its way in and cause all sorts of problems. In this how-to, we demonstrate two methods of using Microsoft Excel for ...

You can stay organized in Gmail with more tools than just email management, such as the tasks list and a versatile contact manager. Over time, especially if you've ever imported contacts, you may find ...