Hey there Jenna thanks for reaching out, just to clarify here you want to be able to add the zip code to companies that are missing it correct.
As for finding emails when all you have is the mobile phone and nae, this would not be possible as we would also need at the company name to proceed with this. As this loom video shows our provider require at least the name, company name and domain in order to find a person's email. How to find work emails using multiple data providers at once