How to move kontact / kmail to another disk?

[Xywa]

Hi,

I need to move kontact/kmail with about 50000 emails and few hundreds folders inside from one computer [Plasma 5.6.4] to another [Plasma 5.5.5].
It will be the same username.

How to do this?

[asturm]

The question is not about what Plasma version you use, but what PIM version. The functionality you're searching for, though I've never used it, should be found at KMail_Tools_Import/Export KMail Data