After I posted my brainstorm on how an email to RSS service could work, I received a few emails informing me that this already exists in many forms. One reader reached out to say that Feedly offers a native service that lets you subscribe to newsletters. Using the service does, however, require that one is using a paid tier of Feedly. I can't use this service because it is tied to Feedly but I love the idea of having an email-to-RSS service as part of a feed reader rather than having to set up an external service.
Another reader informed me that Feedbin does this. You get a private email address that you can use when subscribing to an email newsletter. This service is also paid and tied to Feedbin specifically. However, there are other services out there that are not tied down to a particular feed reader, including:
It may not always be necessary to forward an email to an RSS feed. For example, Substack, a popular newsletter and writing tool, provides feeds to which you can subscribe. But, not every tool does this. I know of at least two newsletters I want to read to which I must subscribe. On those two newsletters, there is no indication a feed is available.
I am so glad to know there are services out there that implement an email to RSS converter. I will explore each of the have options and set one up. I'll probably go with IFTTT since I have some experience using it. Thank you to all of those who made me aware of these services. I hope this post helps others who were in my shoes a few days ago, struggling to find any easy way to forward emails into an RSS feed.