My school has provided us some emails with a custom domain (not @gmail.com but @myschool.smth) and we as students are only able to login via gmail, however i obviously do not want that. What can i do to prevent that? I tried logging into the email via Thunderbird but i get blocked because my administrator doesn’t allow that.
Among other suggestions: consider using Thunderbird as your email client instead of the official Google-served website. This will prevent some Google tracking.