Content of post does not end up in “ShareThis” mail

One year ago a support employee wrote that “as of right now, the only fields that will show up in an email share is the link title and URL.” I don’t know whether this is still the case.

But I doubt that ShareThis would ever send the whole contents of the post via mail. I would imagine a webmaster would prefer the receiver of the mail to visit the site instead of just reading everything in the mail.

ShareThis does document some Open Graph tags, including og:description. Can you try that and tell us whether they end up in the mail?