When you subscribe to receive emails about Bugs, Blueprints or Answers in a particular project on Launchpad, the email sent does not have a unique identifier (specific to the project) in either the From: field or the Subject: field.
EXAMPLE:
I just got the following email:
From: myname <email address hidden>
Subject: Re: [Question #135181]: How to retrieve plugin path and absolute url?
THE PROBLEM:
I am subscribed to MANY different projects that are hosted on Launchpad, and there is no quick easy way to identify which project sent me this email in my email client. Although you can figure it out when you click on the email and read the body of the email, it would be nice to know where it came from without having to click on it.
The Footer is missing the info about the project, assignee, status, and language.
We believe munging data into a subject line to be bad practice. Answers, like other Launchpad applications, sets x-header and adds a footer to provide this information:
X-Launchpad
Provides the details about the message content
X-Launchpad
Will explain why you got the email
The footer the Launchpad emails should reiterate both pieces of information. I think Answers is missing the details.