Add email & nonverified color to contact show

app/models/concerns/email_verifable.rb

@@ -0,0 +1,35 @@
+module Concerns
+  module EmailVerifable
+    extend ActiveSupport::Concern
+
+    def email_verification
+      EmailAddressVerification.find_or_create_by(email: email,
+                                                 domain: domain(email))
+    end
+
+    def billing_email_verification
+      return unless attribute_names.include?('billing_email')
+
+      EmailAddressVerification.find_or_create_by(email: billing_email,
+                                                 domain: domain(email))
+    end
+
+    def domain(email)
+      Mail::Address.new(email).domain || 'not_found'
+    rescue Mail::Field::IncompleteParseError
+      'not_found'
+    end
+
+    def verify_email_mx_smtp(field:, email:)
+      errors.add(field, :invalid) unless email.blank? || Truemail.valid?(email)
+    end
+
+    def correct_email_format
+      verify_email_mx_smtp(field: :email, email: email)
+    end
+
+    def correct_billing_email_format
+      verify_email_mx_smtp(field: :billing_email, email: billing_email)
+    end
+  end
+end