markdown in preferences

app/models/account_config.rb

@@ -58,6 +58,12 @@ class AccountConfig < ApplicationRecord
   TEMPLATE_CUSTOM_FIELDS_KEY = 'template_custom_fields'
   POLICY_LINKS_KEY = 'policy_links'
 
+  EMAIL_VARIABLES = {
+    SUBMITTER_INVITATION_EMAIL_KEY => %w[template.name submitter.link account.name].freeze,
+    SUBMITTER_COMPLETED_EMAIL_KEY => %w[template.name submission.submitters submission.link].freeze,
+    SUBMITTER_DOCUMENTS_COPY_EMAIL_KEY => %w[template.name documents.link account.name].freeze
+  }.freeze
+
   DEFAULT_VALUES = {
     SUBMITTER_INVITATION_EMAIL_KEY => lambda {
       {