Just invoke accessibility as an implicit benefit of the multitude of email usage possibilities and slack etc should be almost taboo.
Re:Fun Yet Effective Meetings
by bryanrasmussen on Thursday October 08, 2020 @08:29AM
(#24718491)
which companies that care so much about accessibility is it that you've been working at?
on the other hand this can also be argued as a strength of email (which is what I would do) because different people need different usage patterns to work optimally, by forcing people into a one size fits all solution you will ensure some people will work less well than others.