Sadly, none of the Airtable apps can be automated in any way. They live isolated in their own little bubble. Even worse, Page Designer doesn’t include any functionality to create PDFs nor add PDFs to attachment fields nor email PDFs.
Then, you could also automate the sending of the email with Integromat as well. (Or you could put the PDF file back into Airtable and use an Airtable email automation to send the attachment.)
p.s. If you have a budget for this project and you’d like to hire an expert Airtable consultant & Integromat Partner to help you with this, please feel free to contact me through my website at ScottWorld.com:
I guess Plumsail Documents will work for you. You can connect it to Airtable using Zapier like here. Inside the product, it’s possible to configure email and other deliveries.