Websites using SmtpJS

Email Visit smtpjs.com

SmtpJS is a free library you can use for sending emails from JavaScript.

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1.3k live SmtpJS sites, ready to export.

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

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SmtpJS companies in the United States

Every SmtpJS website we detected in the United States.

Companies with personnel emails

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

Decision makers on LinkedIn

Sites with at least one personnel LinkedIn profile.

Top 100,000 SmtpJS sites by traffic

Start with the highest-traffic end of the dataset.

Sites on a .com domain

Limit results to SmtpJS websites on .com domains.

Companies with phone numbers

Only sites where an organisation phone number was found.

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Versions

Which SmtpJS versions are most used?

We could read a version number on over 99% of SmtpJS sites. Of those, the most common are SmtpJS 3, on 1,276 sites and SmtpJS 2, on 46 sites.

97% on v3
Versions detected
2
Sites with a version
1,322
Share of sites by version
v3 97% v2 3%
Live Websites

Websites Using SmtpJS

A sample of live SmtpJS sites from our latest crawl, with the other technologies each one runs.

Open in the Lead List Exporter
DomainAlso runsCrawl Date
hondajakartacenter.com
jQueryApache HTTP ServerCloudflareGoogle Tag ManagerSwiper
September 27, 2026
gopocket.in
jQueryHTTP/3HSTSBootstrapCloudflare
September 27, 2026
getsolo.io
CloudflareAmazon Web Services
September 27, 2026
cedisur.com.ar
jQueryPHPMySQLWordPressHSTS
September 27, 2026
skyhawksecurity.in
jQueryApache HTTP ServerBootstrapOWL CarouseljQuery CDN
September 27, 2026
tecnoaccion.com.ar
jQueryNginxBootstrapCloudflarereCAPTCHA
September 26, 2026
icd.ca
HSTSReactNode.jsVercelWebpack
September 25, 2026
nmp.com.pk
HTTP/3Google AnalyticsLiteSpeedGoogle Tag Manager
September 25, 2026
iciciprualternates.com
HSTSGoogle AnalyticsGoogle Tag Manager
September 25, 2026
daralber.ae
jQueryHSTSBootstrapCloudflareGoogle Analytics
September 24, 2026

How many websites use SmtpJS?

We found SmtpJS on 1,325 websites in our September 2026 crawl, across 96 countries.

Which countries use SmtpJS the most?

By number of websites, the top countries are United States (22%, 293 sites), India (14%, 186 sites), Germany (4%, 47 sites), France (4%, 47 sites) and United Kingdom (2%, 26 sites). Together they account for 45% of the 1,325 SmtpJS sites we track. 53% of the sites are in English, and .com is the most used domain ending, on 50% of them.

Where are SmtpJS websites hosted?

The networks carrying the most SmtpJS sites are Amazon.com, Inc. (207 sites), Hostinger International Limited (149 sites) and Cloudflare, Inc. (140 sites).

What technologies are used with SmtpJS?

Across the 1,325 SmtpJS sites we track, the technologies most often found alongside it are jQuery (66%, 877 sites), Bootstrap (57%, 750 sites), Cloudflare (34%, 449 sites), HTTP/3 (30%, 393 sites) and Google Analytics (30%, 391 sites).

Deep Dive

Breakdown of SmtpJS websites

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

Same category

Other technologies in Email

Email technologies run on 0.97% of the websites we track. SmtpJS ranks #14 of 36, on 0.27% of Email sites.

All Email technologies

FAQ

Answers drawn from our latest crawl of SmtpJS 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.