I did think about providing the email interface. The only reason I ended up not implementing it was because I was afraid people would not be comfortable sharing their email ids with a new site. Plus, many people have auto email signatures (especially for office email account) that are appended automatically at the end of the email message. Sometimes these signatures contain personally identifiable information like title, extension number etc. I did not want this information accidentally disclosed on the site. I found these auto email signatures very difficult to parse out reliably across different formats and systems.