Over time you might find that your people/contact database contains the same person !
We call this duplicate contacts and we have a tool that will help you manage your duplicates.
You can find duplicates by email address, Phone or Name.
Open your Contacts and select the Tools button.
Then click on the the Duplicate button.
Select the two contacts that you want to merge and then click on the merge button.
When you merge two contacts any activity will also be merged.
You can click on the arrow to change the direction for merging.