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## Optimizing Mailbox Searches

During a mailbox search, the service account copies messages from the end user mailbox to the Exchange discovery mailbox and then parses the search results to the ScanMail database. This is a time-consuming and resource-intensive task. Trend Micro recommends performing an estimate of the search results before performing the actual search.
Performing an estimate of the search results does not require the service account to copy any messages and has a limited impact on the Exchange server. After performing an estimate, administrators can optimize the search criteria before performing the actual search.
If administrators think a mailbox search may affect the performance of the Exchange server, Trend Micro recommends scheduling the search to run at off-peak hours using the Search Later function.