Deltadromeus Email Checker is the solution to prevent people from subscribing to your list with an invalid or fake email address

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a site using deltadromeus email checker

Block invalid email addresses from signing-up to your website

Our solution blocks the submission of nonexistent email addresses, in real time, directly on your sign up form. Your prospects are requested to provide a valid email address to continue. You only get valid leads.

Common detected errors

wrongly entered, mispelled domain name, mispelled username, inexisting email account, inexisting domain, disposable address, account over quota...

How it works

For each email submission, our tool connects to the email server, simulates sending a message, and verifies if the mailbox really exists. No actual email is sent.


Don't lose half of your subscribers with double opt-in.
Deltadromeus verifies your subscriber's email address in a second, directly on your sign up form.

Increase your revenue

Turn invalid and fake email addresses into valid and corrected leads that will convert into sales. Gain valuable leads.

Better deliverability

Sending emails to invalid adresses results in hardbounces and low email open rate that get your future emails labelled as spam. Improve your deliverability and increase your email open and click rates!

Save your money

Don't waste your money sending emails to inexisting mailboxes!


Check out what you get with this solution!

reporting example

Real-time verifications on your website

Deltadromeus verifies email adresses directly on your website, in real time, whenever a lead is submitted!

Your prospects rectify their email addresses

Prospects who enter an existing email address won't see any change. Those entering a mispelled or fake email address will just be asked to rectify it!

Easy to integrate

Our solution is easy-to-use for non-developers! Integrate it yourself without any technical skills. Our support team is available to help you.


Get a precise report on how many email addresses are rejected, accepted and gained after rectification.


Monthly plans based on the volume of email addresses verified

up to 1500 verifications - $9 /month
for high-volume plans, contact us

Change or cancel your plan at any time. No hidden fees. 1 month free trial: see how many conversions you gain!

Stop losing revenue.
Start sending emails to real people.

Let's Get Started!

We our clients!

Our solution is built for online businesses and marketers who want to focus on conversion. No coding skills needed. Deltadromeus is an easy-to-use tool that will help you start collecting real email addresses in less than 5 minutes. Our team offers free support to help you get it work on your website!