webtelemetry.dev
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Technology · Plugins and themes

MailOptin

Not part of a site's own stack, so it is counted separately from what sites are built with.

Websites31working, as of their last visit
Found this week31first seen in the last 7 days
New launches0domains registered in the last 30 days
Over time

New websites using MailOptin, per day

Websites first seen each day. The line starts on the first day of data.

Not enough history yet: trends appear once there are at least two days of data.

Cite

Cite this figure

webtelemetry.dev. (2026). New websites using MailOptin, per day [Data set]. Retrieved September 28, 2026, from https://webtelemetry.dev/tech/mailoptin#fig-new-websites-using-mailoptin-per-day

Figures as of 28 September 2026, 20:22 UTC. They change as new sites are checked, so keep the date with them. Link to this figure

Hosting

Where they are hosted

Germany 5
France 3
United States 1
Netherlands 1
Romania 1
Greece 1
Canada 1
Uruguay 1
Server country. Sites behind a CDN have no single location
Cite

Cite this figure

webtelemetry.dev. (2026). Where they are hosted [Data set]. Retrieved September 28, 2026, from https://webtelemetry.dev/tech/mailoptin#fig-where-they-are-hosted

Figures as of 28 September 2026, 20:22 UTC. They change as new sites are checked, so keep the date with them. Link to this figure

Stack

Often used alongside MailOptin

jQuery 100.0%
MySQL 100.0%
WordPress 100.0%
PHP 100.0%
Google Hosted Libraries 74.2%
Google Font API 74.2%
jQuery Migrate 71.0%
Cloudflare 64.5%
Yoast SEO 64.5%
Let's Encrypt 51.6%
Share of these websites that also use each, from a sample of up to 200,000 sites
Cite

Cite this figure

webtelemetry.dev. (2026). Often used alongside MailOptin [Data set]. Retrieved September 28, 2026, from https://webtelemetry.dev/tech/mailoptin#fig-often-used-alongside-mailoptin

Figures as of 28 September 2026, 20:22 UTC. They change as new sites are checked, so keep the date with them. Link to this figure

Recently seen websites using MailOptin