We have an ERP system running on our terminal server which sends e-mails via the MAPI interface. I have seen that you can redirect mailto links to the local client. Does this also work with the mails that are sent via the MAPI interface?
Switch ERP output to SMTP (Best Practice): Configure the ERP to generate emails using background SMTP directly through Microsoft 365, Exchange, or a local mail relay instead of relying on client MAPI calls.