CSS HTML Validator vs. MailerCheck Comparison


CSS HTML Validator AI Internet Solutions LLC	MailerCheck	+	+
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About CSS HTML Validator for Windows, Mac, and Linux is a fast, powerful, highly user configurable, and easy to use web development tool that checks HTML, CSS, SEO, spelling, accessibility (including WCAG 2.0/2.1/2.2), PHP, XHTML, JavaScript, htmx, and links. CSS HTML Validator includes batch processing (in the Pro edition), integrated HTML/CSS editing, and much more. It works offline so it's super-fast and your privacy is protected because your documents are not uploaded to a server for checking. CSS HTML Validator Pro has superior customization features so you can configure the validation to your liking. You can even add your own validator messages, recognize your own HTML elements and attributes, and much more. Try CSS HTML Validator Pro for Windows free for 200 validations or 30 days, whichever comes first. A FREE limited version of htmlval for Mac and Linux is also available.	About MailerCheck is an all-in-one email deliverability platform that helps businesses optimize their campaigns and email configuration. With the email verification tool, users can upload a single email or entire email list and analyze it to find problematic and invalid emails to be removed to keep sender reputation intact and improve deliverability. The Email Insights module provides a campaign analytics tool that lets businesses checks for spam, validate HTML, troubleshoot sender authentication, and more on a centralized platform. Switch to Inbox Placement and you can check whether your campaign will land in the inbox, promotions or spam folder of leading mailbox providers. MailerCheck has native integrations with email marketing platforms such as MailerLite, Mailchimp, ActiveCampaign and more. Businesses can also utilize the email verification API for real-time validation within their website or app, and Zapier to integrate the platform with thousands of other apps.
Platforms Supported Windows Supported Mac Supported Linux Supported Cloud Not Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported	Platforms Supported Windows Not Supported Mac Not Supported Linux Not Supported Cloud Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported
Audience Any person, business, or other entity with a website	Audience For all businesses that are serious about email and need a straightforward solution for cleaning their email list and improving deliverability.
Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported	Support Phone Support Not Supported 24/7 Live Support Supported Online Supported
API Offers API Not Supported	API Offers API Supported
Screenshots and Videos View more images or videos	Screenshots and Videos View more images or videos
Pricing $60 (one time) CSS HTML Validator Home Edition is only $60 and the Pro Edition is $125. The Mac and Linux command line tool (htmlval) is $79 (included with Pro). FREE for online HTML & CSS validator. Free Version Supported Free Trial Supported	Pricing $10.00 Pay as you go pricing: Credits Price per credit 1K to 5K: $ 0.01 per credit 5K to 10K: $ 0.009 per credit 10K to 25K $ 0.008 per credit 25K to 50K $ 0.007 per credit 50K to 100K $ 0.006 per credit Monthly subscription (save 20%) Credits / month Monthly cost 2,500 $ 20 5,000 $ 36 10,000 $ 64 15,000 $ 96 20,000 $ 128 Free Version Not Supported Free Trial Supported
Reviews/Ratings Overall 4.8 / 5 ease 4.6 / 5 features 4.8 / 5 design 4.8 / 5 support 5.0 / 5 Read all reviews	Reviews/Ratings Overall 5.0 / 5 ease 5.0 / 5 features 5.0 / 5 design 5.0 / 5 support 5.0 / 5 Read all reviews
Pros & Cons from Real Users Pros What is just as important as high quality of a tool? A developer’s willingness to keep driving their project forward in an evolutionary way! Albert Wiersch is just such a developer. You can sense his passionate attention to detail throughout the programme, in the configuration, in the documentation and in the output. Thank you, Albert, for this brilliant work! I starting using this five years ago, and have not looked back since. It really is a one-stop shop for keeping your code free of any problems. By finding issues in your code, however minor they might seem, you can keep your code clean, and this leads to far fewer problems in the long run. Without it, minor issues aren't caught, but at some stage they accumulate and then you end up with a big mess which is much harder to sort out. Good support if you have any problems in implementation. Highly recommended. Excellent syntax checking that, in addition to locating errors, offers relevant targeted advice on correcting errors, best practices, accessibility, and SEO, making CSS HTML Validator a good tool when learning HTML, CSS, etc., and a sophisticated advisor even for an advanced practitioner. In addition to validating single HTML/CSS pages, it checks links and is able to process an entire website to generate a comprehensive analysis of all pages. The website can be local on the file system or online and accessed via a URL. The validator engine allows one to choose the level of error checking (Full, Errors only, Errors and warnings only, etc.) and enabling/disabling specific messages. The editor includes features specific to editing HTML and CSS pages. Validation includes JSON (in HTML pages) and WCAG (Web Content Accessibility Guidelines). The ASPX pages are html nightmares for the most part. By testing the runtime manifestations against this product (in other words, grab the page source and drop it into this product), I can see a number of things that need to be addressed in the source - css, poor document structure The only limitation I have run into is that I need to embed css links in the pages explicitly instead of relying on the Telerik style sheet manager to organize and provide them to the app. It would be very helpful if a set of CSS stylesheets could be automatically searched and so on. Love the way it tells you the line and the error message. Makes troubleshooting very easy. Just open your file and click validate, just that easy. Cons I found nothing of relevance. May be I overlook something. Nothing. If I had any difficulty in implementing a particular option, I contacted support and the problem was sorted. As with any product, various individuals will have various preferences, but, for myself, I am at a loss to suggest possible improvements. As one who runs Linux, the fact that CSS HTML Validator is a Windows-only application was a "con" (I ran it in a VM), but, as of Wine 9.0, all features of CSS HTML Validator perform flawlessly when installed on Linux with Wine. I am not sure why I get the starting panel offering me options on startup. Maybe it can be disabled. A bit annoying. Wish there was a lifetime price for upgrades, but am satisfied with the current pricing per version.	Pros & Cons from Real Users Pros My open rates skyrocketed! Love this product. MailerCheck is a cost-effective bulk email verification platform. It offers a very quick process of verification. It helps to eliminate the wrong entered email in marketing campaigns. Works pretty well give an instant verification process. Cons I can't find any cons, I am extremely happy with everything. There isn't anything to share about its cons.
Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported	Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported
Company Information AI Internet Solutions LLC Founded: 1997 United States www.htmlvalidator.com	Company Information MailerCheck Founded: 2005 New York www.mailercheck.com
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Categories SEO Supported Web Accessibility Testing Supported Website Optimization Tools Supported	Categories Email Deliverability Supported Email Verification Supported
Show More Features SEO Features A/B Testing Not Supported Artificial Intelligence (AI) Not Supported Auditing Not Supported Competitor Analysis Not Supported Content Management Not Supported Dashboard Not Supported Google Analytics Integration Not Supported Keyword Research Tools Supported Keyword Tracking Not Supported Link Management Not Supported Localization Not Supported Mobile Search Tracking Not Supported Rank Tracking Not Supported Revenue Management Not Supported User Management Not Supported Web Accessibility Testing Features ADA Compliance Not Supported Alerts / Notifications Not Supported Automated Testing Not Supported Mobile Accessibility Testing Not Supported Ongoing Accessibility Monitoring Not Supported Reporting / Analytics Not Supported Visualize Accessibility Not Supported WCAG Compliance Supported Website Optimization Tools Features Competitor Analysis Not Supported Content Management Not Supported Keyword Research Tools Supported Link Management Supported Performance Metrics Not Supported Problem Area Alerts Not Supported	Show More Features Email Deliverability Features Deliverability Alerts Supported Deliverability Reporting Supported DMARC Analytics Not Supported Email Address Verification Supported Email Content Testing Supported Email Previewing Supported Inbox Placement Testing Supported IP Blacklist Monitoring Not Supported Reputation Reporting Supported Email Verification Features Bulk Email Verification Supported Catch-all Server Detection Supported Disposable Email Detection Supported Domain Check Supported Mail Server Validation Supported Single Email Verification Supported Spam Trap Detection Supported Syntax Check Supported
Integrations ActiveCampaign Not Supported ElectroNeek Not Supported EmEditor Supported Kit Not Supported KonnectzIT Not Supported Mailchimp Not Supported MailerLite Not Supported Quickwork Not Supported Stackreaction Not Supported Zapier Not Supported View All 1 Integration	Integrations ActiveCampaign Supported ElectroNeek Supported EmEditor Not Supported Kit Supported KonnectzIT Supported Mailchimp Supported MailerLite Supported Quickwork Supported Stackreaction Supported Zapier Supported View All 9 Integrations
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