Issue with authorise account in office 365

[jnonemanUT]

Hi all, i believe i need one last step to finish this up. What redirect URI should be added to the App Registration?
I left it blank and i get the "AADSTS500113: No reply address is registered for the application"

I imagine i am one step aweay from getting this working.

[jnonemanUT]

In case anyone else runs into this. I had to add a "Mobile and Desktop Applications redirect URI" set it to http://localhost which then told me that the email was authorised, but everytime i try and send an email its requiring me to authorise and emails never go through