Posted 22 February 2012 - 02:49 PM
Sorry for the late response.
I've been looking into this. Here's the problem:
Gmail remembers two different kinds of addresses. First, andmost obvious, are your contacts--the people, companies, and organizations thatyou have intentionally added to your address book. The other group is addressesthat you've sent email to--even if you've only sent mail to that address onceand never intend to send it again.
In many ways, this is a nice convenience. You've neverbothered to add this person to your contacts, but you can still start typingtheir name and up comes their address (assuming the address contains theirname, of course).
But it can also be a problem. You start typing in a friend'sname and up come two addresses--the one from your contact list and a dead oneyou haven't intentionally used in years. And you pick the wrong one.
So how do you delete a contact that isn't one of your contacts.By pretending you're going to turn it into a contact.
Click Gmail in theupper-left corner of the Gmail web page, then Contacts from the pull-down menu.
Start typing the address in the search field. When the addressor the person's name appears, select it.
This will set you up to turn this person into a realcontact. You can add or change the name, add an address, a birthday, and even aphoto.
But, of course, that's not what you're here to do. Instead,pull down the More menu near the topof the window and select Delete contact.
It's possible that if you start typing the name into amessage's To field immediately, it will still come up. But if you wait a coupleof minutes, it won't. and it won't ever again.
There is one variant to this: When you select the name, youmight find that the unwanted address is one of several addresses for a realcontact who you want to keep. You just want to get rid of that address.
In that case, don't select Delete Contact. Just click insidethe unwanted address field, press CTRL-ato select the entire address, then press the DELETE key.