Should links inside emails be considered attachments?  In the technical sense of an email (like rfc 2183) links wouldn’t be considered a different content type.  The question isn’t whether they are technically attachments as much as if they should be attachment-like in the user interface.
Facebook
Facebook handles links in a message almost like an attachment-object and [...]

I spent some time on Friday and Monday writing a script to do some analysis of the Enron Email Dataset.  I’m working on a new type of message list view for thunderbird, well a whole new layout actually, but for the message view I wanted to have an idea of message size and content.
Email Data
It [...]

It’s time to start looking into a new search method for Thunderbird. One of the major changes planned for Thunderbird is a new and improve search, but what does that mean?
What do we have?
First lets look at what we have for a search system.  At a very simple level most search systems break down into [...]