How do i send link of past terms to patrons?

I see that there are creators that lock their past terms and have a tier where patrons can ask for it. I don't want to say any names because it might get this post taken down. But, these creators have like 400 spots open for this tier and i was wondering how do they send these links if everyone is asking for different terms. Like, worst case scenerio, all 400 want a different term, so is that 400 different individual messages? How do that do that?