Outlook no-reply notification

[Davesilverberg]

Is there a way to set up something where Microsoft Outlook will let you know which messages received a reply and which didn't. I would like to do this for either specific messages or all messages.
I send emails out to vendors and sometimes will forget about one or two and get messed up when they don't reply. Read receipts don't really help.
If anyone has a suggestion I would greatly appreciate it.
I am using Outlook 2003

[soybean]

I'm familiar with Outlook 2003 and I don't know of a way to do this, but I'm not absolutely sure about it.  I did review the email settings and did not find any setting to accomplish this.

I don't know whether you'd consider using Outlook Express.  I would normally not suggest it over Outlook, but it has a feature which will do what you want.  In OE, under View, selecting Group Messages by Conversation accomplishes what you want to do.