TurboTurbo

you can’t demand people to change, it has to come from within. you can only talk to them and try to change their point of view. that certainly may not work in this case. your issue is not about if your father can live without you, but if you can live without him. if the answer is yes, then spending less time with him may be better for your mental health. also, you don’t need to cut ties immediately completely. you can do that gradually to see if it is the right decision for you.

If you are comfortable with the command line, mbsync / isync allow you to save your mail offline with the ability to search and read it later on. You can use a cron job to fetch the email however often you want it.