Lease Expiring Letter I Sent A Certified Letter But Forgot To Sign The Letter. It Does Have My Name At The Bottom. Will This Be Ok?

I sent a certified letter but forgot to sign the letter. It does have my name at the bottom. Will this be ok? - lease expiring letter

I sent a letter to my landlord to ask how much would the rent, if the current sub-tenant would sign a new contract (my contract expired) last month. In my haste I forgot to sign the letter and confirmed by email. Is it still acceptable?