Unified inbox
A unified inbox puts messages from several accounts and channels into one list. The guides here explain what that means in practice, where the built-in versions from Google and Microsoft stop, and how a ranked feed differs from a merged one.
Start with the definition, then read the comparisons if you are choosing a tool.
Start here
What Is a Unified Inbox? (And Why Founders Are Switching in 2026)
A unified inbox brings email, Slack, Teams and more into one place. Here is what that means in 2026, how AI prioritization changes it, and who it is for.
