I have a legacy email account with a "used to be popular" ISP

It's free, I've been using it for ~25 years, you know the drill.

However, I lost access to it when I bought a new phone, and everything didn't transfer over. I couldn't reset the password without buying the 'premium' service, it was only $10 or $15, I was able to cancel after (so I wasn't re-charged next year or month).