Do you know that Mirror has a “Subscribe button URL“ setting? It lets you add a subscription button at the bottom of your posts. Now with the help of Submirror, it’s easier to use this setting to get subscriptions of your Mirror project via RSS.
Go to Submirror, enter your mirror url
After creation, you’ll be redirected to your subscription page, mine is https://app.submirror.xyz/p/wong2
Go to your Dashboard Settings, find “Subscribe button URL“ at the bottom, enter the subscription page url you get above.
Now every posts of you will have a subscription button at the bottom. Visit my post as an example: