+1 -- this feature would be a big help! We’re in education and deal with busy parents with differing schedules, and would love to meet them where they are.
I see that Seventh Sense exists, but would be ideal to have this functionality native within HubSpot at no cost -- open+click data is all in the database, so theoretically it’s “just” (I know not as easy as that) a matter of layering a feature on top of the email tool.
For one-off sends and automated sends, too -- would be nice if a workflow send email option had the extra layer of sending within their preferred time (if there’s enough data to support a preferred time for that user).