Creating a daily or weekly digest message of newsletters. I can see the implementation being like an automatically generated email (opt in) that takes all the sender addresses and subject lines from every messages sorted into the newsletter view and delivered back into the inbox. This would condense messages quickly to make sure nothing important was missed and allow you to skip over everything else. This would be EXTRA useful if newsletters could be completely removed from the inbox view, or is a new -newsletter view was created. Really cut down on the clutter without the chance of missing something or something being misfiled