Mail routing to wrong mailbox

Question

I run Mail 3.3, with 10.5.4. I today just zeroed the drive and reinstalled.
As is typical, the only persisting issue is Mail. This is one issue I can't recall experiencing before, though.
I have mail that is addressed to two different email addresses - ending-up in the same Mail Inbox. I have trashed the .plist preference file, erased the account folders, and created new ones. So-far, the issue persists. The messages all show going to the username of the given mailbox in which they reside, but the address of some mail is for a different account.
Also, when I delete a message now, they don't go into Trash, but stay in the Inbox, and turn grey.
Anyone have any idea(s) on how I can correct this.

Answer 1

Hi again,
Mail has always worked superbly for me in all versions, including the current one, and I have 9 accounts.
Mail does not utilize the email address to construct the Username -- the Username of each account must be unique, even if from the same provider (in this case your ISP, apparently). The Username must be correctly entered and will in nearly all cases be the portion of the email address in front of the email address or the entire email address entered in the spot for Username. It does necessarily have to relate to the Login ID given to you by your ISP, although it might be the same for your primary email account if that Login ID is included in your email address. Mail only communicates with any mail server via the Username and Password you enter when setting up the account -- the email address entry can actually be different from that of the account, but then that would normally be problematic in that the From address would not be what you desire. But that is one way alias addressees are handled in Mail since you can have multiple addresses in the Email Address box.
Click on View in the menubar, and see if either Show Deleted Message or Hide Deleted Messages is presented in Black -- it so (and with your report it probably has Hide Deleted Messages) then the preferences have become confused at some point. I would change the Preference to Deselect moving deleted message to a separate folder, immediately Quit Mail, and then change the preference to again move them to a separate folder and test.
Ernie