Review for MailHops by andreamonni
Rated 4 out of 5 stars
@techanon - you don't need to disable Conversations to use MailHops, if you choose "view using the classic reader" from the "more" menu on the right side of the message you'll see where the message was sent from.
Said this, it'd be nice if MailHops played nice with Conversations and integrated with it.
To create your own collections, you must have a Mozilla Add-ons account.