I can't receive or send ISP emails through my "Mail" app. as I get the message "Unable to verify account name or password."
I have Spectrum as my ISP and have the migrated Time Warner / Roadrunner original emails that I can log into through Spectrum's web mail. But I can only view one at time and I have several. I would like to be able to view all these along with the working apple email in my mac's mail app. I try to enter the servers and hosts to no avail?
iMac 21.5″, macOS 10.15