EmailOnDeck: is it really impossible to detect?

Disposable email addresses ruin online businesses and fill databases with rubbish registration data no one wants. Among the temporary email address providers out there, EmailOnDeck uses several smart tools to hide itself from email verification services and claims to be impossible to detect: what to do if you need to block EmailOnDeck? Keep reading, we have a solution!

Catalina Mihai
Catalina Mihai
Digital Marketing Specialist
June 16, 2020

EmailOnDeck is a disposable email provider which allows anyone to create a fake, disposable email address in a matter of seconds. Creating a disposable email with EmailOnDeck is very easy - basically one has to complete a security check (captcha) and then he can request a free, temporary email address which lasts for about 10 minutes (see the image below).


According to their website, the service has been reviewed by CBS News, Fox, ABC, NBC and many more and is considered to be the only undetectable temporary email provider in the Internet. According to their FAQ, they are different from other temporary email sites like Mailinator, YOPmail, GuerillaMail. because their service was created by a team of professionals that have a deep knowledge of how email systems work; they consider detecting whether an email address is temporary or not as trivial for most websites that, when they know your email address is temporary, can block you from signing up with their services. The difference with other disposable email address providers is that EmailOnDeck makes detecting temporary / disposable email addresses nearly impossible because of several security mechanisms: in that regard, it really is one of the best disposable email address providers out there and detecting EmailOnDeck emails appears to be quite challenging.

But disposable email addresses ruin online businesses and fill databases with rubbish registration data no one wants. What to do if you need to detect and block EmailOnDeck? Keep reading, we have good news for you.

Why Should You Care?

Disposable Email Addresses (DEAs) are temporary, throwaway email addresses that are typically used by individuals who choose to hide their identities. Most of the time, these email addresses have a short life span like 10 minutes - enough to open and click the link in your verification email to confirm that the address is valid. In a commercial context, as an online merchant or service provider, you might want to be careful about potential customers entering your service using temporary email addresses (as those provided by Mailinator, YOPmail, GuerillaMail, 10MinuteMail, MailDrop, etc.). The use of Disposable Email Addresses in a commercial relationship must be avoided because:

  • Usually, it indicates a lack of trust in your company or brand. Trust is the foundation of the commercial relationship between buyer and seller.
  • They might want to take unfair advantage of your service or offers, like a discount or free trial or possibly even payment fraud.

Verifalia detects and blocks EmailOnDeck

At the time of this writing, we can already detect over 37,260 disposable email address providers, with the largest set of this kind in the market; in addition to that, we also use a number of home-grown Artificial Intelligence models which identity EmailOnDeck and other similar disposable email address providers, based on certain characteristics of the domain under test and its network fingerprint to automatically block them. Temporary / disposable email addresses originating from EmailOnDeck will be marked as Undeliverable by Verifalia, with a status code of DomainIsWellKnownDea. This detection always happens in real-time, so this is ideal even for developers looking for an API to detect disposable email addresses like those from EmailOnDeck on their website signup form.

Check out how well (and fast!) we verify email addresses - including those provided by EmailOnDeck and other disposable email address providers - on our free email verification tool.

Disposable, or temporary email accounts, come in all shapes and sizes with different features: to make a decision on whether to send an email to this kind of risky email addresses or not, first you need to understand the differences between them. You can then use email segmentation and optimized messaging to try and build trust with the remaining subscribers over time.

Keep your email list healthy and boost your email campaign performance by regularly cleaning your email list. We'll do our magic and let you know which email addresses are good, bad and risky, before you hit the send button.

Catalina Mihai
Written by
Catalina Mihai
Digital Marketing Specialist

Passionate about many things, but mostly about Online Marketing. I am a Digital Marketing Specialist at Verifalia.

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