[daviding]

Just to clarify what I meant by the 'unsubscribe' part, many newsletters (like your Costco example from the OP) contain an unsubscribe link without an email but with a unique id in the href. When clicking this you often get to a page that then lets you unsubscribe and sometimes also see who the address was subscribed too, which defeats the purpose. I'm not sure what would be the ideal solution, but you could hit it with a hammer and remove all hrefs from the content in the email DOM, or perhaps parse explicitly for unsubscribe links (harder, as they vary, a bit of NLP etc). Alternatively, just consider the page as 'not for hostiles', in that the user should only share with people who wouldn't hunt for mischief in the first place.

For next steps and parsing, it really depends on if you want to store a user graph your end, i.e. do you want to also initiate the 'share' and know who is looking at the link? If you do then the features go in one direction (collaboration, conversations, actionable stuff) but if you don't want that then it's sort of a different animal (formatting, i.e. galleries, content suggestions and the like).

For a font, Helvetica Neue or anything in that family is all the rage ;)

[mailpin]

Thank for your insightful feedback! It's really really helpful! We'll think through it :)