I often have several emails that are all interrelated, but for various reasons they do not require action yet. As I'm an Inbox Zero user ... this can slow me down. I may snooze them each for later or I may be working around them until it's time to take action. In various browsers you can put a set of tabs into a group. I'd love to have that option in Missive. If I put them into a Tag then they are "out of site and out of mind". Ultimately, I want to group them so that it takes up one line in the inbox and so that I can take action on the entire group (e.g. snooze the group).