An email address list checker is an online tool that checks whether or not a specific email address exists and is capable of receiving emails. This can help protect your sender reputation by ensuring that campaigns you send are only going to inboxes rather than spam folders. It can also prevent spam traps, abuse and disposable email addresses from clogging up your lists, reducing your chances of deliverability problems.

Emails sent to invalid addresses will bounce, causing your deliverability to suffer. Using a free online email address checker can ensure that all the email addresses in your mailing list are valid and active so you can reach more subscribers and grow your business.

Email Address List Checker: Ensuring Clean Contact Lists

The easiest way to use an email address checker is to upload a list of emails and let the tool do the work for you. Alternatively, you can verify a single email address by typing it into the box and clicking on the ‘Check’ button. Depending on the size of the list, verification can take seconds or minutes.

Most online email validation tools also provide additional information about an address to help you understand its health. For example, many services can identify whether an email is a catch-all or role address, as well as detect spam traps and other risky addresses. They can also ping an email address to see whether it responds, which helps confirm that it is a live, valid inbox. Using an email list checker can reduce the number of hard bounces and improve your email deliverability by ensuring that you’re only sending to active inboxes.