I wouldn’t pay for an O365 account just to get that to work, probably better to see if you can just find a free app that doesn’t have them. Thunderbird used to be good years ago and free, but I never used it for Android, just Linux based machines. I’m sure there is someone around Lemmy that has a billion thoughts to share on what clients are ad free, ethical, and don’t cause baby pandas to have a heart attack, haha