A no-nonsense list of links to things that caught my attention.
When I find a link which I deem worthy to share, before I share it in other ways (and I might not even do that!), I'll add it to the link-mail queue, with nothing more than a sentence or two of descriptor text.
When I add a fifth link to the queue, I will send the email immediately.
That's it. Quick, short emails with 5 links.