Registrar account recovery best practices

Howdy team. I have a client that uses GoDaddy as a domain registrar. Hoping to migrate them away before renewal next year, but in the interim I'm concerned about what will happen if DNS gets wrecked.

The account is tied to an email address under one of the domains belongings to the account. We're looking at an email migration in the near future, which will include updating MX records. I've seen before where MX records are updated wrong, password reset is needed for the registrar, but mail can't flow. It was a cluster****. I checked out the account settings within the GoDaddy portal, but didn't see anywhere to add a backup email address.

Questions: Does GoDaddy allow for an alternate email address to be specified? How do y'all typically handle this problem? My first thought is to make a Gmail account of the company name and use that as the primary email for GoDaddy, but I'd love to hear something more robust.

Let me know if there's anything I can clarify.