Hi @FractalCreative. Welcome to the forum!
Treepl currently integrates with MailChimp for email campaigns and we don’t have any way to pull CMS/CRM content into those emails.
For sending users password reset links, there may be some ideas here:
Migrating Adobe BC secure zone members to Treepl CMS CRM and the process?
And regarding your request overall, I think it could be a good use-case/example to add to the main MailChimp backlog request here:
Mailchimp question/issue