I have been working (hard) on MailPress these days, and reviewing most of the code …
Here are samples of twitter embedded in mails (which was broken)
With all twitter links directly from the mail ! But i can’t figure out how Twitter make their mails rendering the id links properly in Gmail. [update] Just found, specific “Content-Transfer-Encoding” quoted-printable required, otherwise, Gmail strips some inline style declarations !
I started developing, learning BASIC, in 1981 on a HP 3000.