After some mucking around tonight. eM Client 9 will install on a win32 Wine Prefix (Windows 7), with basically no argument. I did install dotnet 3.5 and 4.8 into the prefix in advance, though I’m uncertain if that was necessary.
Wine 7.3 on Arch, Kernel 5.16.11, Plasma 5.24.3-1.
It installs and runs, some issues adding a gmail acocunt but that’s a product of the oauth flow and not having the right protocol handler set up for the call back (com.emclient.mailclient).
Adding a basic imap account went fine, adding caldav/carddav accounts from a nextcloud instance worked fine. Mail is synced and can be read. Looks rough/pixelated but I didn’t do anything to enable font smoothing yet. Calendars and contacts sync and are viewable.
All works well but for one critical error, I cannot open the settings window. As soon as I do the entire program crashes. Seems it might be an issue with DirectX? I’ve tried installing DXVK and Gallium Nine (Using an AMD card with Mesa drivers), makes no difference.
Unfortunately that completely kills it as an option. If anyone else has more success, let us know!