app/controllers/admins_controller.rb

@@ -148,7 +148,8 @@ class AdminsController < ApplicationController
       send_invitation_email(current_user.name, email, invitation)
     end
 
-    redirect_back fallback_location: admins_path
+    redirect_back fallback_location: admins_path,
+      flash: { success: I18n.t("administrator.flash.invite", email: emails.join(", ")) }
   end
 
   # GET /admins/reset

app/controllers/concerns/emailer.rb

@@ -78,8 +78,6 @@ module Emailer
     rescue => e
       logger.error "Support: Error in email delivery: #{e}"
       flash[:alert] = I18n.t(params[:message], default: I18n.t("delivery_error"))
-    else
-      flash[:success] = I18n.t("administrator.flash.invite", email: email)
     end
   end