Adding custom vars to email templates? User email confirmation FRONTEND_URL use case

Hello,

I would like to be able to add custom vars to the e-mail templates of the user-permission confirmation and reset password templates.

I’m using Strapi v5 through an Astro front-end, so the Strapi confirm link will not be immediately visible to end users who need to click on the e-mail link.

A solution would be being able to define custom vars such as the provided <%= CODE %>, for example <%= FRONTEND_URL %> that would be available globally.

Without this, I think I need to hard code these values between dev and staging.