A RFI can be answered simply by replying to the email they get when an RFI is created. The response is archived in Procore, and an email update is sent to the creator of the RFI as well as each person on the Distribution (CC:) List when a user replies in Procore or from their email.
However, when a RFI is reassigned, the email that is sent is a notification and does not support the reply functionality. The return email address will be firstname.lastname@example.org. In this case, the assignee must log into Procore to answer the newly reassigned RFI.