Having to access private email to log in somewhere is a huge pain for me when on some networks, e.g uni with only http/s proxy and no IMAP so I can't even check

Having to access private email to log in somewhere is a huge pain for me when on some networks, e.g uni with only http/s proxy and no IMAP so I can't even check my email when on Wi-Fi. I have worked at places that use outlook/gmail so they block gmail/outlook for workers (yes, I've encountered both at 2 diff workplaces).