We would like to utilize the Exchange server to send invoices via email from GP instead of Outlook. We have switched the system preferences from MAPI to Exchange.
It took my Exchange credentials but generated the error below after. The same error also appears when the system preferences are set to MAPI and I click the "deny" button when GP attempts to gain access to Outlook. This makes me think that it is a permissions issue?? Are there additional changes elsewhere that have to be updated for it to work?

I found the below information:

Our SharePoint URL field is blank. Is that a requirement?
The note references Microsoft Dynamics GP Web Client as a requirement for using the exchange server. How do I ensure that we have Web Client installed and up to date?
Any ideas help!
Thank you!