I’d assume each of those profiles is already setup in the CMS?
If so, all you have to do is add that CMS Items field (the email address) into a native Webflow form as a hidden field.
Submit that form to your automation service (Zapier, Make / Integromat) or directly to whoever you email with.
Zapier has built in email. Make / Integromat allows you to connect to your Gmail account or any other service (SendGrid, ConvertKit, Campaign Monitor, whoever).
You can also get fancy with the latter and alter the “reply-to” address to be your experts email address.
Here’s more info on how to setup getting that CMS value into your form: