Notify admins when a approval/invite user signs up

app/mailers/user_mailer.rb

@@ -51,4 +51,22 @@ class UserMailer < ApplicationMailer
     @color = color
     mail to: user.email, subject: t('mailer.user.approve.subject')
   end
+
+  def approval_user_signup(user, url, image, color, admin_emails)
+    @user = user
+    @url = url + "admins"
+    @image = image
+    @color = color
+
+    mail to: admin_emails, subject: t('mailer.user.approve.signup.subject')
+  end
+
+  def invite_user_signup(user, url, image, color, admin_emails)
+    @user = user
+    @url = url + "admins"
+    @image = image
+    @color = color
+
+    mail to: admin_emails, subject: t('mailer.user.invite.signup.subject')
+  end
 end