tisun2.OofManager 1.1.3

Manage Microsoft 365 / Exchange Online Out-of-Office (Automatic Reply) settings without opening Outlook.

OOF Manager is a lightweight Windows desktop tool that manages your Microsoft 365 mailbox's Out-of-Office (Automatic Reply) state for you. Sign in once, configure your weekly work hours and reply text, and OOF Manager auto-toggles your OOF on/off at the schedule boundaries. It also pushes the next off-hours window to Exchange as a Scheduled OOF, so the server keeps switching auto-replies even when this app is closed.