First off, thanks for adding in the ability to send out posts as emails, the functionality and design of it all is utterly fantastic.
I know there’s several things that will be added to the functionality as time goes on, but I thought I’d chip in about one that might not be so obvious. That is, I noticed that at the bottom of emails, between the publication name and the year published, there’s that little © symbol displayed. Thing is, some of us have our posts licensed under Creative Commons statutes (with even a Creative Commons SVG displayed at the bottom of sites/posts), which the © at the bottom of emails conflicts with.
Any chance there might be the possibility in the future to choose between the Copyright © and a Creative Commons 
image for emails?
As a side note, I suppose things could get a tad complex if one has free posts that are licensed under Creative Commons but then also has members-only posts, the latter presumably being copyrighted so as to not encourage forwarding of members-only emails.