I've been using it since OhLife shut down and it completely fills the gap for me.
I recently modernized the code a bit, ported it from Mongo to Postgres and improved the selection of the random entry that is sent to you, but I haven't pushed those changes yet. They'll go out in the next week or so.
Also, for those of us who never used OhLife the readme doesn't really tell me what it does.
And yes, good point on the README not explaining what it does. Thank you. I'll fix that.
I've been continuing to use DailyDiary since.
I have an apps script that automatically adds a draft response to these prompts, which still starts with an "Oh Life, ...." salutation. The script also adds the day's weather report to the bottom of the draft. My todo list has an item to add top and random tracks from my scrobbled music listening for the day.
In the evening I fill in the body of the response with reflections from the day and off it goes.
Email only authentication would presumably outlive any provider.
I bought into the MyOpenID SSO excitement once, it worked pretty well until it went away. After that, back to email accounts, identity providers like Google/MS/Twitter don't end to know everytime you're logging into your app.