How to follow Tumblr feeds?
Step 1:
For getting an RSS feed of any Tumblr blog, you can use the following URL:
https://{blog-name}.tumblr.com/rss
For example https://yetanotherthriftblog.tumblr.com/rss
For a custom domain using a Tumblr blog, use the following URL:
https://{custom.domain}/rss
Step 2:
Once we have the RSS link, we can follow it in the Spotlight page search bar.
Step 3:
Finally, add it to any of your folders; from now on, it will update with all new entries.