EWS protocol does not suffer from this limitation. However, please note that we still impose an equivalent in the single-parameter variants of
EwsSearchParameters.Sent - these are supposed to search for messages that arrived (or were sent) on the specified date (not for messages that arrived after or before the specified date/time).
In order to search for messages that arrived (or were sent) after or before the specified date/time, use the two-parameter variant of those parameters and specify
Nothing in VB.NET) for one of the bounds. For example:
If this still doesn't work as expected, please let us know.