Deleting messages makes them disappear but a record of them can remain. The reindex function sees those records and includes them in its processing (brings the messages back). OTOH, the "recover deleted space' function removes the records of the deleted messages. It can be run on any folder after deleting messages, not just empty ones. You can test this by making a safety copy of the messages you
want to keep followed by doing message deletions then
running the 'recover deleted space' function. A subsequent reindex will
not bring the deleted messages back. There shouldn't be a reason to
reindex though.
<p>Deleting messages makes them disappear but a record of them can remain.&nbsp; The reindex function sees those records and includes them in its processing (brings the messages back). &nbsp; OTOH, the "recover deleted space' function removes the records of the deleted messages.&nbsp; It can be run on any folder after deleting messages, not just empty ones.&nbsp; You can test this by making a safety copy of the messages you
want to keep followed by doing message deletions then
running the 'recover deleted space' function.&nbsp; A subsequent reindex will
not bring the deleted messages back.&nbsp; There shouldn't be a reason to
reindex though.</p><p>&nbsp;</p>