InboxZero - The best and most innovative mail app to master your overloaded mailbox.
Sortd - Rated the #1 App for Gmail
Acapela - All your work notifications in one inbox
KanbanMail - A Kanban board for your emails.
Google Workspace - Google's encompassing suite of cloud-based business apps.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.