Tenant notice to vacate transfers

[Lily Tang]

I'm in the process of closing on a home with existing tenants. The tenants provided written notice via email to vacate to the seller (current owner). Will the notice to vacate remain valid after I close and the new homeowner / landlord is me? I assume so but don't want to make assumptions! Is an email sufficient & legally binding (I'm paranoid about tenants not vacating if the email is not legally binding)? If the lease has two names, but the email is sent and signed with just one of the two names, any protocols here?

thank you!