Validating Email Addresses: 5 Methods and a Free Tool


For successful email outreach, ensuring your messages reach your intended recipients’ inboxes is paramount. One crucial metric to monitor is your bounce rate, the percentage of emails that fail to be delivered. High bounce rates can severely impact your email deliverability, leading to wasted resources and diminished returns on your efforts. To maintain a healthy bounce rate, it’s essential to send emails only to verified, valid email addresses. However, verifying emails before sending them can be a challenging task. In this article, we’ll explore five proven methods to validate email addresses without sending emails and risking your sender reputation, along with a free tool to aid in the process. Also check if email address is valid or not

Free Email Verifier

At lemlist, we offer a free tool that allows you to verify up to 10 emails for free. Additionally, for those with larger lists, our Email Finder and Verifier tool can efficiently handle bulk verification, achieving accuracy rates of up to 80%, surpassing many other available options.

5 Methods to Validate Email Addresses

  1. Syntax Check: Ensure the email address follows the correct format: username + “@” symbol + domain name. For example, “[email protected]” is valid, while “” is not.
  2. Hover Test: In Gmail or Google Sheets, hover your mouse over the email address. If it’s valid, you’ll see additional information such as the lead’s full name and image.
  3. Google Search: Conduct a quick search to see if the email address is associated with any online presence, indicating its legitimacy.
  4. Domain Age: Older domains are typically more reliable. Utilize domain checker tools to determine the age of the domain associated with the email address.
  5. Email Verifier Tools: Utilize bulk email verifier tools like lemlist’s Email Finder and Verifier for quick and accurate validation. This tool combines data from multiple sources, providing enhanced accuracy compared to traditional methods.

Using lemlist’s Email Finder and Verifier

During the campaign setup process, import your lead list and select the option to “Verify email.” The tool will clean the lead’s name, extract relevant information, and display the email’s status, including whether it’s deliverable, risky, undeliverable, or unknown. Additionally, it may save additional information such as phone numbers and job titles if available.

Credits and Pricing

New users receive 100 free credits, with paid plans offering varying amounts of free credits that reset monthly. Additional credits can be purchased for a nominal fee, with unused credits rolling over to the next month.

Other Reliable Tools

Several other tools, such as Clearout, Bouncer, NeverBounce, and more, offer similar email verification services. These tools typically operate on a credit-based system, allowing users to upload their email lists for validation.

Key Takeaways

Validating email addresses before sending messages is crucial for successful email outreach. By utilizing the methods and tools outlined in this article, you can ensure that your emails reach their intended recipients, maximizing the effectiveness of your campaigns and minimizing the risk of being flagged as spam.