How to Add Contacts inside In Place Archive in Office 365. Please Share sample code for the same.
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You may find code sample regarding adding contacts to an exchange server at this link.
https://docs.aspose.com/display/emailnet/Working+with+Contacts+on+Exchange+Server#WorkingwithContactsonExchangeServer-AddingContacts
Moreover, please write back to us if you need additional information in this regard.