The Campfire
Gather everyone around, hand them a beer, and tell them something gripping.
For this email, you gather everyone around the campfire and wait until everyone is nice and comfortable...
You can hand them a beer, which some would argue is absolutely necessary in this type of gathering...
You throw a fish to the guitar guy so that he finally shuts the hell up for a few minutes...
And you tell them a fascinating story about an interesting person or event or thing that happened.
From horror stories to myths and urban legends, everything goes as long as it's gripping.
It has to be inherently interesting and go well with the fire's cackling.
It could be a ghost story, it could be an odd story, it could be something you heard in the news, or something that you saw unravel before your very eyes.
Maybe tomorrow they'll come expectantly, with a big smile and a bag of Marshmallows (or money)