You do realize that Verizon bought AOL (2015) and Yahoo (2017) --- took verizon years to migrate to yahoo servers. The verizon sold yahoo/aol to hedge funders in Sept 2021. Again verizon may or may not migrate from yahoo servers in the future.
The only issues are:
- whether your email provider migrated their backend system
- whether your email provider's new backend system accepts oauth 2.0
- whether your computer's OS and email client app accepts oauth 2.0
The simple answer is that:
- if both email provider server and your email email client accepts oauth 2.0, then you just use your real password
- if not, then you have to create separate "app password" for each of your different computers, laptops, mobile phones that can't do #1
The difficulty is that documentation (especially in covid-19 era) are lagged.
Windows 10 Mail app can do oauth 2.0 as of right now --- I mean Windows 10 21h2 with Mail app. I can't tell you if Windows 10 20h2 with mail app would be able to do it.
If your verizon email account migrated its backend system to yahoo server and that yahoo server accepts oauth 2.0 and you use windows 10 21h2 mail app, then just select yahoo in the Mail app when you add your verizon account. Then the Mail app will take you to the yahoo sign in webpage, type in your verizon email address and your real email password.