Thanks swills9,
All my emails are duplicated on my computer but copying across those most useful to the camera is a pain.
As a suspicious retired computer professional I do not upload any data on-line (to cloud etc.).
Smart Switch worked admirably when I restored from a J5 (2016) back-up to the new S20. I was very surprised by that, but there was still work to copy emails and make various customised settings.
