Ask HN: Recommend an IDaaS/Login provider?

I've been using Mozilla Persona to manage logins for letscodejavascript.com since 2012. But Persona is reaching end-of-life in November.

I could replace it with my own code, but managing email queues, worrying about password security, and maintaining it all is work I'd rather not do. It's not core to my business.

I'm looking for a simple login provider that will be around for the long term. I'm just looking for the basics:

* Login. Ask for the user's email and password, confirm that they're correct, and give me the user's email address.

* Signup and email verification: Get a new user's password and send a confirmation mail to their email address.

* Lost password: Send a password reset email to the user's email address.

Any recommendations or experiences to share?