Kmail 5.4.3 - where do I find it?

[barraclm]

Apparently Kmail 5.4.3 fixes a critical problem with respect to autocomplete. I have just upgraded to Kubuntu 17.04 and that still has Kmail 5.2.3.

Does anyone know where I can download Kmail 5.4.3?

[wildmanne39]

Thread closed. Please do not post duplicates, it dilutes community effort.