gab-social/app/views/user_mailer/confirmation_instructions.text.erb

<%= t 'devise.mailer.confirmation_instructions.title' %>

===

<%= t @resource.approved? ? 'devise.mailer.confirmation_instructions.explanation' : 'devise.mailer.confirmation_instructions.explanation_when_pending', host: site_hostname %>

=> <%= confirmation_url(@resource, confirmation_token: @token, redirect_to_app: @resource.created_by_application ? 'true' : nil) %>