Include more than one line in the message preview

When I get an email notification about a mention, the only thing I see is the greeting. This is extremely poor use of all the email notification real estate because

1) it makes the notification useless since you don't even get curious to see what it's all about when it's just the greeting and

2) with so little time that we have in general, a longer preview can at least give some indication of what the DM or mention is about. Again, not everyone wants to download the app or wants to get push notifications. And when you rely on email notifications, they need to be worth the time to open them up in the first place and then to hop back into the community.

Could you please do something about this?

As well as sending out email notifications faster as requested here for DMs (but applies to all mentions) >> https://heartbeat.canny.io/feature-requests/p/please-shorten-time-it-takes-for-dm-notifications

(Screenshot attached below as an example of what I mean with the email notification being too short and generic)