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Technologies / Heroku / SocketLabs

Companies using Heroku and SocketLabs

2 companies in our data have public evidence for both Heroku and SocketLabs, and 2 name both in their own subprocessor list. Each company below links to the source for every claim. Our coverage is partial, so this is not everyone.

2companies use both
1%of Heroku users
40%of SocketLabs users
2name both as subprocessors

The companies

Strongest evidence first: a company naming both in its own subprocessor list comes before one seen on its website or in job postings.

Subprocessor listPrivacy policyWebsiteJob postings

CompanyHerokuSocketLabs
Assessments 24x7assessments24x7.comAssessments 24x7 provides a platform for delivering behavioral and professional development assessments, including DISC, motivators, emotional intelligence, and 360° assessments.HR and recruiting
Userlistuserlist.comUserlist is an email marketing automation platform for SaaS companies.CommunicationsMarketing

The two technologies

Heroku

Cloud and infrastructure

Heroku is a container-based cloud Platform as a Service (PaaS). Developers use Heroku to deploy, manage, and scale modern apps.

Summarized from heroku.com on 8 Nov 2026.

1% of the 179 companies we see using Heroku also show the other.

All 179 companies using Heroku154 name it as a subprocessorMore in Cloud and infrastructure

SocketLabs

Email and communications

SocketLabs is an email delivery platform. It is used to send, route, and analyze email data.

Summarized from socketlabs.com on 9 Nov 2026.

40% of the 5 companies we see using SocketLabs also show the other.

All 5 companies using SocketLabs5 name it as a subprocessorMore in Email and communications

Other pairs

Companies with their own evidence for both.

More with Heroku

Cloudflare173companiesGoogle Workspace137companiesAmazon Web Services132companiesStripe94companiesGoogle Analytics88companiesGoogle Tag Manager86companies

More with SocketLabs

Cloudflare5companies

Questions

How many companies use both Heroku and SocketLabs?

2 companies in StrataDB's data have public evidence for both, and 2 of them name both in their own subprocessor list, the strongest evidence we hold. Our coverage is partial, so the real number is higher.

Which companies use Heroku and SocketLabs?

Assessments 24x7 and Userlist. Each one links to the evidence behind it.

How does StrataDB know a company uses Heroku and SocketLabs?

From four kinds of public evidence: subprocessor lists, privacy policies, website code and job postings. Each is kept apart with its source and the date we saw it. A company missing here means we found no evidence, not that it does not use them.

Find every company using Heroku and SocketLabs

See the full list with the source for each company, and run the same lookup for any technology from the API, Claude or your browser.

  • Every company and vendor, with its public source
  • 100 API calls a month, plus MCP and the Chrome extension
  • Work email only. No card, no sales call