Real number of recipients
Hello,
What is the best (fastest) way to estimate or calculate precisely the number of recipients of an email containing nested Exchanges mailing lists?
I have tried parsing each addressEntry of each recipient recursively, but this method is very slow. 30s for 600 recipients, which blocks my plugin.
I tried with the GetExchangeDistributionListMemebers method. It's a bit faster, but not so much.
When composing an email and adding large mailing lists, Outlook estimates the number of recipients as I want, but I don't find this property in the object model or in the proptags.
Do you have a solution?
Thank you