Symbol as part of an e-mail address...

Question

hello.
I use Mac Mail.
Every time I try to type in a friend's e-mail address in a new mail message, a symbol pops up in the address field as part of the actual address.
I delete that part of it, but as soon as I hit the "enter" button (so that the cursor dissappears), the symbol pops up again.
And when I try to send, it says that it's an invalid address.
I can't get rid of this thing.
The symbol used to be in the address book under this person's name.
It was in the last name field.
But I deleted it a while ago.
Now he is just listed as a first name. No last.
As soon as I type the first few letters of this friends' name, the mac automatically enters this symbol in the address field, at the end of the actual real address.
can someone help?
Thanks.

Answer 1

From Mail's Help menu:
To manage addresses in your Previous Recipients list:
Choose Window > Previous Recipients.
Do one of the following:
1. To sort the list by name, email address, or the date the address was last used, click a heading.
2. To search for a name in the list, enter the name in the search field .
3. To remove a selected recipient from the list, click Remove From List. Removing the recipient is useful if you don't intend to use it again or if you previously mistyped an address and want Mail to stop suggesting it as a matching address.
4. To add a selected recipient to your address book, click "Add to Address Book." (Addresses that are already in your address book have a card icon next to them.)