Free Email Verifier

Enter an email address to check it with the mailfloss optin form email verifier. Get 5 free checks per day. Need more? Install the widget on your own site, use our powerful real-time API, or one of our best-in-class native email service provider integrations.

Trusted by people from busy businesses across industries

Fake emails suck. They’re a financial drain, lost opportunity, and hurt inbox deliverability

An invalid email address means there isn’t a real person on the other end. This sucks on so many levels. First, there’s the cost of sending the email. Second, there’s the cost of storing the email address in your email service provider. Let’s not even talk about the costs and efforts to acquire the address in the first place. Then there’s the fact that sending to too many invalid email addresses results in lower inbox deliverability. That means the emails you send become less effective because they aren’t reaching the real people on your list. That’s less profit and higher costs for no good reason. Not cool. But fear not, mailfloss has you covered. Accurate, fast, daily automated cleanup, and really easy to use.

You’re busy, we get it. Email verification shouldn’t be so hard.

With mailfloss, it’s easy. 60 second, one-time setup. No developers needed. All you need is a supported email service provider. With one of those, press a few buttons, pick your preferences, and voila, you’re all done. From that point on mailfloss will keep your email lists squeaky clean. It’s simple, but crazy powerful. You’ll see.

Not using a supported email provider? No problem. Use our optin form email verifier and verify emails at point of capture. Just copy and paste a chunk of your code into your form, and you’re off to the races.

And if you have technical chops and want complete control, use our real-time API.

The point is you have options with mailfloss. And they are all good.

Get started in 60 seconds

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