Doltics

Simple validation for your website.
Our validation API checks and ensures the content processes on your website is valid. 
We validate email records against the domain to ensure that you are receiving and sending valid content from your site using out third party solution. 
We check and verify the email domain MX records are valid. Each new unique request is maintained for 24 hours before a fresh request is done.
<ol>
<li><a href="https://doltics.com/docs/email-validation-api/" rel="nofollow ugc">Documentation</a></li>
<li><a href="https://doltics.com/terms-of-service/" rel="nofollow ugc">Terms of service</a></li>
</ol>
Future plugin updates will include <a href="https://en.wikipedia.org/wiki/Deep_learning" rel="nofollow ugc">Deep learning</a> to better understand spam emails and email content with compatibility with popular form plugins. 
For now we validate the <code>is_email</code> function provided by WordPress core.

Doltics Validator

johnmate

CiteKite validates online quotations to prove they are accurate. The CiteKite plugin for WordPress helps you easily integrate CiteKite with your WordPress site. See more about CiteKite at http://citekite.com
With CiteKite in place, you’re enhancing and verifying the credibility of online quotations.
A CiteKite verified label means that a quotation has been independently verified by CiteKite, by comparing it to its source on a webpage. The reader can see more information about the quotation, including the web address of the source material and its context, by clicking on the CiteKite label.
There’s no charge to start using CiteKite. Even higher-volume websites can use CiteKite for a small yearly fee. And if the original source material goes offline, there’s no need to worry – we keep a record, so your quotation can still be verified and your site’s visitors can find out when it was last available.
<h4>When you quote someone else</h4>
CiteKite enhances your credibility, because it shows that you’ve taken time to make sure an online quotation is accurate. When you add CiteKite to your website or blog, we’ll check quotations for accuracy and give your site’s visitors extra information and a link to the original source of the quotation.
<h4>When someone else quotes you</h4>
When someone wants to quote your website, CiteKite can help make sure that your work is credited properly. We think transparency is vital – so CiteKite makes it easy to ensure credibility all round, in an easy and user-friendly way. You could even add this to your copyright notice

CiteKite

CiteKite automatically validates quotations you make of other websites and lets the world know you care.

Doltics Validator vs CiteKite