mailfly.io

Website review mailfly.io

MailFly | Instantly Preview and Perfect Your HTML Emails

 Generated on February 12 2026 02:56 AM

Old data? UPDATE !

The score is 56/100

SEO Content

Title

MailFly | Instantly Preview and Perfect Your HTML Emails

Length : 56

Perfect, your title contains between 10 and 70 characters.

Description

Catch email design glitches before sending. Preview your HTML emails across clients and devices using MailFly's API or VSCode integration.

Length : 138

Great, your meta description contains between 70 and 160 characters.

Keywords

HTML email preview, email design testing, responsive email testing, pixel-perfect email preview, cross-client email testing

Good, your page contains meta keywords.

Og Meta Properties

This page does not take advantage of Og Properties. This tags allows social crawler's better structurize your page. Use this free og properties generator to create them.

Headings

H1 H2 H3 H4 H5 H6
4 9 17 4 0 0
  • [H1] Catch Design Glitches Before They Reach Inboxes
  • [H1] How it Works
  • [H1] Want to see it in action first?
  • [H1] mailfly
  • [H2] See Every Email as Your Audience Does
  • [H2] Upload Your HTML
  • [H2] Select Preview Client
  • [H2] View and Perfect
  • [H2] Connect with Your Favorite Tools
  • [H2] FAQs
  • [H2] Pricing that just fits
  • [H2] We are met with cheers from the crowd!
  • [H2]
  • [H3] Github Support
  • [H3] Multiple Clients
  • [H3] Flexible Pricing
  • [H3] VSCode
  • [H3] APIs
  • [H3] GitHub
  • [H3] wait, there's more..
  • [H3] How do I preview an HTML email?
  • [H3] Which email clients are supported?
  • [H3] Is there a community for support?
  • [H3] How secure is my data?
  • [H3] Can I use the service with my development tools?
  • [H3] What are the pricing options?
  • [H3] Can I integrate third-party tools?
  • [H3] Monthly
  • [H3] Lifetime
  • [H3] API Key Preview
  • [H4] $ 24.00
  • [H4] $ 89.00
  • [H4] Contact: mailfly@h501.io
  • [H4] ( it won't be shown again )

Images

We found 44 images on this web page.

35 alt attributes are empty or missing. Add alternative text so that search engines can better understand the content of your images.

Text/HTML Ratio

Ratio : 0%

This page's ratio of text to HTML code is below 15 percent, this means that your website probably needs more text content.

Flash

Perfect, no Flash content has been detected on this page.

Iframe

Too Bad, you have Iframes on the web pages, this mean that content in an Iframe cannot be indexed.

URL Rewrite

Good. Your links looks friendly!

Underscores in the URLs

Perfect! No underscores detected in your URLs.

In-page links

We found a total of 6 links including 0 link(s) to files

Anchor Type Juice
Try it Now! Internal Passing Juice
Watch Video Internal Passing Juice
VSCode Integration Internal Passing Juice
Visit GitHub Repo External Passing Juice
Get it NOW! Internal Passing Juice
Get it NOW! Internal Passing Juice

SEO Keywords

Keywords Cloud

download key api again preview shown close

Keywords Consistency

Keyword Content Title Keywords Description Headings
api 1
key 1
preview 1
shown 1
again 1

Usability

Url

Domain : mailfly.io

Length : 10

Favicon

Great, your website has a favicon.

Printability

We could not find a Print-Friendly CSS.

Language

Good. Your declared language is en.

Dublin Core

This page does not take advantage of Dublin Core.

Document

Doctype

HTML 5

Encoding

Perfect. Your declared charset is UTF-8.

W3C Validity

Errors : 0

Warnings : 0

Email Privacy

Warning! At least one email address has been found in the plain text. Use free antispam protector to hide email from spammers.

Deprecated HTML

Great! We haven't found deprecated HTML tags in your HTML.

Speed Tips

Excellent, your website doesn't use nested tables.
Too bad, your website is using inline styles.
Great, your website has few CSS files.
Perfect, your website has few JavaScript files.
Too bad, your website does not take advantage of gzip.

Mobile

Mobile Optimization

Apple Icon
Meta Viewport Tag
Flash content

Optimization

XML Sitemap

Missing

Your website does not have an XML sitemap - this can be problematic.

A sitemap lists URLs that are available for crawling and can include additional information like your site's latest updates, frequency of changes and importance of the URLs. This allows search engines to crawl the site more intelligently.

Robots.txt

https://mailfly.io/robots.txt

Great, your website has a robots.txt file.

Analytics

Missing

We didn't detect an analytics tool installed on this website.

Web analytics let you measure visitor activity on your website. You should have at least one analytics tool installed, but It can also be good to install a second in order to cross-check the data.

PageSpeed Insights

Device
Categories

Free SEO Testing Tool

Free SEO Testing Tool is a free SEO tool which provides you content analysis of the website.