Hey LBKoch
To remover the need for manual validation I user Zapier to automate phone number verification checks.
Zapier is compatible with Hubspot and you can link it to the OpenAI API (ChatGPT) to analyze fields in your Hubspot CRM. I use the OpenAI prompt function within Zapier to analyze the phone number field and the country field from Hubspot to produce a formatted response which I then use Zapier to pass to the Numverify API.
I provided some further screenshots on this link
Simply link Hubspot upto Zapier then link in OpenAI API to analyze fields in your Hubspot
Zapier and Hubspot
Using Zapier pass number to be validated from the OpenAI API to Numverify API
Pass number to be validated by Numverify
Numverify will provide you with validation details about the number
Phone number validation results
Use Zapier automation to send the results back to Hubspot or a Google Sheet.
Hope this helps
Christopher