EmailJS 4.x icon

Websites using EmailJS 4.x

EmailJS is a cloud-based email delivery service that allows you to send emails directly from your client-side JavaScript code without the need for a server-side implementation.

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3.1k live EmailJS 4.x sites, ready to export.

That's how many EmailJS 4.x websites are in VersionDB right now, each with its full tech stack, contact details, and social profiles.

Pick a ready-made template, or build your own filters in the Lead List Exporter and pay only for the rows you export.

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Every EmailJS 4.x website we detected in the United States.

Only sites where a personal, company-hosted email was found.

Sites with at least one personnel LinkedIn profile.

Start with the highest-traffic end of the dataset.

Limit results to EmailJS 4.x websites on .com domains.

Only sites where an organisation phone number was found.

Create your own
Versions

Which EmailJS 4.x versions are most used?

We could read a version number on over 99% of EmailJS 4.x sites. Of those, the most common are EmailJS 4 (exact), on 3,084 sites and EmailJS 4.4.1, on 15 sites.

100% on v4 (exact)
Versions detected
2
Sites with a version
3,099
Share of sites by version
v4 (exact) 100% v4.4.1 <1%

How many websites use EmailJS 4.x?

We found EmailJS 4.x on 3,100 websites in our September 2026 crawl, across 120 countries.

Which countries use EmailJS 4.x the most?

By number of websites, the top countries are United States (29%, 886 sites), India (7%, 220 sites), France (5%, 163 sites), Germany (4%, 129 sites) and United Kingdom (3%, 85 sites). Together they account for 48% of the 3,100 EmailJS 4.x sites we track. 54% of the sites are in English, and .com is the most used domain ending, on 50% of them.

Where are EmailJS 4.x websites hosted?

The networks carrying the most EmailJS 4.x sites are Amazon.com, Inc. (788 sites), Hostinger International Limited (403 sites) and Cloudflare, Inc. (336 sites).

What technologies are used with EmailJS 4.x?

Across the 3,100 EmailJS 4.x sites we track, the technologies most often found alongside it are jsDelivr (over 99%, 3,089 sites), HSTS (39%, 1,219 sites), HTTP/3 (30%, 933 sites), jQuery (29%, 884 sites) and Google Analytics (24%, 748 sites).

Deep Dive

Breakdown of EmailJS 4.x websites

What else they run, plus their language, hosting network, domain extension and country.

FAQ

Answers drawn from our latest crawl of EmailJS 4.x websites. Anything else, email us and we will look it up.

Through our own crawl, which checks each site's HTML, scripts and headers rather than relying on self-reported data.