Dilli Email Validator (DEV) version 1.2.2.0 released!

WordPress 5.0 is out. We are excited to report that a new version (1.2.2.0) of Dilli Email Validator (DEV) WordPress plugin has now been released and is certified to work with WordPress 5.0.

Dilli Email Validator adds advanced email validation capabilities to your email address form field. Prevent incorrect and mis-typed email addresses in forms on your wordpress website with this plugin. Watch the video below to learn more:

DEVA detects restricted domains

Dilli Email Validation API (DEVA) now detects email domains belonging to adult sites

Tired of constant spam with explicit content that are sent from email addresses with domains pointing to objectionable sites? Deploy Dilli Email Validation API to your rescue now!

Dilli Email Validation API (DEVA) now supports an optional check to mark email addresses as invalid if their domain points to a site containing sexually explicit content. This feature is currently in beta and is available immediately to existing and new users. However, it is turned off by default. If you are an existing user and will like to enable this check on your account, please reach out to us.

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DEVA now detects Role Based Email Addresses like admin@, info@, help@, support@

Dilli Email Validation API (DEVA) – the advanced email validation API – now has the ability to detect role-based email addresses such as info@, help@, store@, etc. It marks such email addresses as invalid.  These addresses are not associated with an individual but rather with a department, company, or group. By default, this check is disabled. However, users may opt-in for including this check among many other validation checks. Reduce spam, bounce backs and increase business productivity by adopting DEVA now. Learn more about other validation checks and DEVA here.

‘Dilli Email Validator’ (DEV) WordPress Plugin v1.1.0.0 Released

Today, we are delighted to release a newer version (1.1.0.0) of Dilli Email Validator(DEV) WordPress plugin. Dilli Email Validator provides advanced validation for email form fields on WordPress sites using DEVA (Dilli Email Validation API). This newer version adds out of the box validation for email fields in forms built using Ninja Forms Wordpress plugin. Simply install, activate and configure DEV and get automatic email validation built into your WordPress sites so as to prevent malicious submissions and typographical errors. DEV already supports email form field validation in other popular form plugins like Contact Form 7, etc.

‘Stop Forum Spam’ Email Blacklist Check in DEVA

StopForumSpam.com maintains a list of known malicious emails used for spam in blogs, forums and wikis. Beginning today, Dilli Email Validation API (DEVA) has added a new validation rule to check an email address against the StopForumSpam’s email blacklist to ensure that ‘bad guys’ are kept at bay from your website. This further enhances already existing advanced email validation capabilities of DEVA to help eliminate spammers from eavesdropping on your websites or other applications. Learn more about DEVA here.

DEVA now detects Disposable Email Addresses

DEVA (Dilli Email Validation API) now includes the ability to detect and flag Disposable a.k.a Throwaway a.k.a Temporary email addresses.

Disposable Email Address (DEA) is a temporary email address that is primarily intended for owners to hide their real email address. Users can request such an address from DEA providers like mailinator.com. This address is ephemeral – it expires after a short period. It is used by real users to circumvent a registration process where email is required without providing their actual email address. Depending on the provider, some of these addresses can be public as well, i.e anyone can access its inbox. For ex: Click here to see the public inbox of fake@mailinator.com.

While initially invented to safeguard privacy, disposable addresses are now being actively abused to submit invalid data via web forms and such. Email broadcasting is a great marketing tool for genuine businesses who like to send periodic notifications to its list subscribers. Having throwaway email addresses in your recipient list means greater bounce rate given the temporary nature of such addresses. Given the frivolous nature of such addresses, its best to not have any DEA addresses in your subscription list.

Another example where such addresses can do harm to your business reputation is if your business is in the lead generation industry. Imagine selling a lead with email fake@mailinator.com to your lead customers? Such an occurrence can do some serious damage to your relationship with them.

In summary, having disposable email addresses in new leads or opportunities can do serious harm to businesses. It may hurt your conversion rate and business reputation.

Starting today, we have integrated a validation rule in Dilli Email Validation API (DEVA) to detect disposable addresses and mark them as invalid. We actively maintain a list of 3000+ disposable email address providers that we check an email domain against to ensure its not disposable. Here are a few ways one can leverage DEVA to stop disposable addresses from making through to you:

Dilli Email Validation API : An Alternative to Mailgun

Mailgun is a great email address validation API that we once recommended and used. However, the recent decision by Mailgun to turn on the pricing switch has eroded a lot of its loyal users’ trust and confidence. Existing users are searching for alternatives to Mailgun for a cheaper and better solution. We were in a similar boat and hopped on to another email address validation service called Mailboxlayer which turned out to be very unreliable. This prompted us to create a new product in-house that will be far more superior than any email validation API in the market with fair pricing. Thus, Dilli Email Validation API (DEVA) was born.

DEVA is a simple API to check if a given email address is real without sending a verification email. Some of the factors used to determines validity of an email address are as follows :

  • Format Validation : DEVA ensures that email address is valid. Ex : email addresses with missing @ are not valid.
  • MX Records’ Existence : DEVA validates that MX records exist for the domain tied to the email address.
  • ESP (Email Service Provider) Grammar Rules: Ex : @yahoo.com emails cannot have user part less than 4 characters. We learn new ESP grammar rules every now and then and incorporate into our validation algorithm.
  • Profanity Check : This is a distinguishing feature of DEVA. It checks email addresses for profanities and marks them invalid if found. Ex : f***you@gmail.com may be a valid email address but is marked invalid by DEVA because no sane person would use that.
  • Patterns : There are countless patterns we discovered while validating over 50,000 emails every month for our clients that are obviously invalid emails. Ex : jondoe@gmail.com, foobar@gmail.com, noemail@gmail.com, etc.  DEVA is constantly learning and building up the black listed patterns as our user base grows.
  • Disposable/Temporary address: Whether or not an email address is a disposable/temporary address such as @mailinator in which case its treated as invalid.
  • Role-based address: Whether or not an email address is role-based, like info@, help@, support@ in which case its treated as invalid.
  • Blacklisted Domains : Ex: example.com is reserved and can’t be used in practice. Therefore, all emails having this domain are marked invalid by DEVA.

1000 email address validations will cost $8 with Mailgun but only $5 with DEVA.

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Email Validation API

Check if an email address is valid in real-time using Dilli Email Validation API (DEVA). Stop spammers from submitting forms with fake email addresses, warn users of mistyped email address or clean up a mailing list using this API.

Demo

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Integrations

WordPress

Dilli Email Validator plugin provides a seamless plug and play integration of DEVA into your WordPress site.

Node.js

dilli-email-validation npm package lets you easily embed DEVA in your Node.js app.

Usage

Request
GET https://deva.dillilabs.com/api/{API_KEY}/email/{address}
Response
true if valid
false if invalid

How DEVA validates an email address?

  • Format Validation: DEVA ensures that an email address has a valid format. Ex : validusergmail.com is invalid email address because its missing the ‘@’ before the domain ‘gmail.com’.
  • MX Records: An email address with a domain that does not have an MX record in its DNS settings is invalid. Ex: user@domainWithNoMXRecord is invalid. DEVA finds if MX records exists for the domain tied to an email address. If no MX records exist, the email address is reported as invalid.
  • Disposable Email Address: DEVA maintains a list of throwaway/disposable email addresses or junk collector email addresses and validates emails against this list. Ex : user@0-mail.com will be invalid.
  • ESP (Email Service Provider) Grammar Rules: Ex : @yahoo.com emails cannot have user part less than 4 characters. We learn new ESP grammar rules every now and then and incorporate into our validation algorithm.
  • Spam Email Address detection: DEVA has access to a gigantic third party database of email addresses known to spam. It queries this database to determine the validity of an email address. Ex : aanetaegooglety@gmail.com is one such email address that is known to spam.
  • Profanity Check: This is a distinguishing feature of DEVA. It checks email addresses for profanities and marks them invalid if found.
  • Role Based Email Address detection: DEVA detects generic group role based email addresses like info@, support@, store@, etc and marks such email addresses as invalid. (This is an Optional check and turned off by default)
  • Patterns: There are countless patterns we discovered while validating over 50,000 emails every month for our clients that are obviously invalid emails. Ex : jondoe@gmail.com, foobar@gmail.com, noemail@gmail.com, etc. DEVA is constantly learning and building up the black listed patterns as our user base grows.
  • Blacklisted Domains: Ex: example.com is reserved and can’t be used in practice. Therefore, all emails having this domain are marked invalid by DEVA.
  • Safe Domains: If the domain represents an adult site, the email is treated as invalid. (This is an Optional check and turned off by default)
  • Custom Blacklist: You may request certain valid domains, emails and users to be blocked. For example: A site may never want any mail.ru email address to be used on their site due to the higher probability of it being a malicious email address. We can add such custom requests to your validation.
  • Custom Whitelist: You may request certain known valid email addresses to be whitelisted.
  • Unsolicited Marketing: Ex: *seomarketing*@gmail.com. Many online marketing companies leverage contact forms on websites to send solicitations for business. We maintain a list of email addresses and patterns in email addresses used in such unwanted offers. (This is an Optional check and turned off by default)

Note: You may request to disable any of the above filters when validating with DEVA.

Client Testimonials

We do online lead generation in various verticals using Dilli Email Validation API (DEVA) which has been crucial to our success. We’ve tried a couple different services, all of which charge significantly more while doing significantly less. I can’t recommend this product enough, GREAT value here.

Joe Webster
Director of Marketing, TOLM Inc.
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