You can choose to filter by unread, date range, attachments, and more. The Focused Filter Inbox allows you to quickly filter your inbox.
Read the Kiwi blog post for more details. Kiwi for Gmail 3.0 or later offers expanded plug-in support, audio and video integration, a new contacts pane, and more. The lite version of Kiwi is still a fully-fledged app, but it limits you to only two Gmail accounts.
You can change the order, set your preferences for receiving notifications, and enable various plug-ins. Kiwi assigns a unique color for each account. To add a Gmail account, go to Preferences > Accounts, then click the Add ( +) button at the bottom and sign in. The right panel is your main account window. Or, you can create new entries with a single click. The left sidebar offers quick shortcuts to Drive, Docs, Contacts, and Calendar.
Kiwi for Gmail brings the entire Google experience to your Mac.