Hi
I have Redmi Note 4 MIDO.
I m stuck at Pie,0.23 version. I m not getting version 1.0.
Now I have built in K 9 mail application. There is a new update of K9 available.
So what to do. Built in K9 Mail application doesn’t show update but in Store there is an update.
Should I uninstall built K9 mail and re install from Store !
Thanks
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The built-in Mail app is based on / is a fork of K9. It has a different package nane. You cannot easily uninstall the Mail app nor disable it (would require adb and a PC). Maybe search the forum for disabling or uninstalling default apps. You can of course just install K9 and use it. Shouldn’t conflict but don’t quote me on that. 
It definitely does not conflict (and you can quote me on that ) You can run both apps side-by-side if you want to, or just disable sync (or delete all accounts) in the built-in app, and just use K-9
Thanks, You too have given me the solution.