Do your emails send the full announcement or the truncated version?
Regardless, my hunch is that the signature injections are after the post is cooked, but the email only sends the raw content, so it doesn’t make it across.
Yes, the e-mails are the full posts.
I agree, the sig is outside of the post content itself.
That’s why when you change your sig it’s updated on existing posts.
I’d love it if that changed, but until then I just have to retype it on each post.