Unique ID to identify all outgoing emails?

[Bingo]

When I sent an email to a group of people, To and CC, is
there a unique ID same for all the copies? Since
subject, sender, time stamp, etc. are not unique, they
won't be qualified for this. Thanks.

 

[Ken Slovak - [MVP - Outlook]]

Look at the ConversationIndex and ConversationTopic properties.

 

[Bingo]

Thanks ken,

It's what I was looking for. Thanks.