Reloop Domain Age & Warmup Checker

About

Domain age is a major factor that causes cold emails to be marked as spam, yet many senders are unaware of it. With this free tool, you can check any domain to find its exact age in years and days, along with its registration and expiration dates. It identifies the warmup stage as Too New, Cold, Warming, or Established, and assesses the deliverability risk to show if your domain could harm your email campaigns. Simply paste any domain or URL to get results in two seconds, with no sign-up required. It is ideal for founders conducting cold outreach, email marketers, and developers. This tool was built by Reloop, which provides open-source email infrastructure.