Is there a way to extract and store an Email domain as a custom property?

My theoretical use case here is the following:

1. Profile is created and added to a segment
2. The Profile would enter a segment triggered Flow
3. The first step would be a webhook with some kind of text formatting step that updated the Klaviyo profile with the domain from an email address - for example, with a email of username@domain123.com, the domain would be domain123.com
4. Use a Zapier process to pass that to a Lead enrichment service to obtain more data about that company - eg industry, company size.

Of course, I could extract the domain in Zapier itself, but that would use an additional task. I know it’s unlikely, but is the email domain stored anywhere by itself in Klaviyo, or can the JSON payload include some kind of text formatting function?