if your lawyer uses google, microsoft or apple for email, maybe better look for another lawyer...
everything one of these (or other) giants know can be assumend to be compromised already in one way or possibly many others or at least in near future.
imagine you email your client some note, that he should carry some documents next time and the giant running word probability algorythms only to look later at the real outcome of the trial and the tactics used by you in front of court to be able to warn THEIR customers about what YOU might currently try to do in front of a court to win against someone. it intentionally removes parts of the value of your work to sell that to their customers while using data that is supposed to be private for reasons.
a lawyer who gives away hints about any of his actions to a tech giant NOW has a high probability that his work isnt worth a dime any longer in mid-term future only because of how lazy he was with his and his clients privacy TODAY.
just to mention.