When I type Rob in my email "to" field my outlook defaults to a Rob that I corresponded with once, rather than a "Rob" I deal with daily. Resulting in the occasional email sent in error to the little known Rob. I want to delete that address from my contacts so that hopefully the often used Rob comes up as a default. But when i go into address book and contacts I can't even find the Rob I want to delete. Where do I find his address on my system so that I can delete it. Any help much appreciated.
Typically when the Rob (who you don't want to use) appears in your draft email, you can right click on him, and remove him from the 'cached' email addresses.
It depends what email client you are using.