SDN Members don't see this ad. (About Ads) I have read that you need to do letters of reccommendation through a program such as Interfolio. What I don't understand is how it works for my LOR writers. For instance, I asked the professor I do research with if she would write me one. When shes done, what has to happen? Does she just send her word document to Interfolio? Should she be writing the thing on interfolio?