Pow Invitation: How to add custom fields to mailer?

Hi there,

I’ve extended the default users table with some additional fields, including a name field.

When I send invitation the default invitation looks like this:

<%= content_tag(:h3, "Hi,") %>

<%= content_tag(:p, "You've been invited by #{@invited_by_user_id}. Please use the following link to accept your invitation:") %>

<%= content_tag(:p, link(@url, to: @url)) %>

I would like to use the name fields of both the invited user and the user that send the invitation.

Any ideas on how I can achieve this?