Add content to e-mail verification email

Hello,

I am trying to add some dynamic content (link back to the verification page) for the e-mail verification message, this is when a user tries to register as a vendor. I’ve found a filter named ‘wcfm_email_content_wrapper’, but this filter is not selectively applied to this email, but to all emails, and I cannot use it in any way that works. How can I add custom content to this e-mail?

Thanks