Schedule email forwarding in Office 365

Question

Is it possible to schedule email forwarding start/stop in Office 365? I see a way to enable/disable in both the Office 365 and Exchange sides, but no way to schedule it. Exchange mail flow rules don't have a date/time criterion.

I could write a PowerShell script to forward email to run as a scheduled task, but that requires separate credentials to connect that I can't/won't store on disk.

Solution

It turns out that you can, in fact, set a date/time component on mail flow rules.

This may be dependent on what kind of Exchange you have, but when creating a mail flow rule, the date/time is under "more options". You can then set it to either redirect the messages or add a recipient to the to/cc/bcc fields.