+# By default, OfflineIMAP will use fsync() to force data out to disk at
+# opportune times to ensure consistency. This can, however, reduce
+# performance. Users where /home is on SSD (Flash) may also wish to reduce
+# write cycles. Therefore, you can disable OfflineIMAP's use of fsync().
+# Doing so will come at the expense of greater risk of message duplication
+# in the event of a system crash or power loss. Default is fsync = true.
+# Set fsync = false ot disable fsync.
+#
+# fsync = true
+