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Technologies / Hertza L.L.C / Slack

Companies using Hertza L.L.C and Slack

4 companies in our data have public evidence for both Hertza L.L.C and Slack, and 3 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.

4companies use both
67%of Hertza L.L.C users
under 1%of Slack users
3name 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

CompanyHertza L.L.CSlack
Emailchaseremailchaser.comEmailchaser provides cold email software for finding leads, verifying addresses, and sending sequences across multiple mailboxes.Sales
Hunter Web Serviceshunter.ioHunter is an email outreach platform that finds and verifies company and contact email addresses.Sales
Zerozero.incSales
Outsetoutset.aiOutset provides AI-moderated interviews and simulated human data for customer research.AI and machine learning

The two technologies

Hertza L.L.C

Email and communications

67% of the 6 companies we see using Hertza L.L.C also show the other.

All 6 companies using Hertza L.L.C6 name it as a subprocessorMore in Email and communications

Slack

by Salesforce · Productivity

Slack is a collaboration platform where teams chat, share files, and work together in channels. It is used for team communication, connecting apps and agents, and automating everyday work.

Summarized from slack.com on 8 Nov 2026.

under 1% of the 1,934 companies we see using Slack also show the other.

All 1,934 companies using Slack1,341 name it as a subprocessorMore in Productivity

Other pairs

Companies with their own evidence for both.

More with Hertza L.L.C

Cloudflare7companiesOpenAI7companiesGoogle Workspace6companiesAmazon Web Services5companiesGoogle5companiesGoogle Tag Manager5companies

More with Slack

Cloudflare1,813companiesGoogle Workspace1,580companiesAmazon Web Services1,298companiesStripe896companiesGoogle Tag Manager880companiesGoogle811companies

Questions

How many companies use both Hertza L.L.C and Slack?

4 companies in StrataDB's data have public evidence for both, and 3 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 Hertza L.L.C and Slack?

Emailchaser, Hunter Web Services, Zero and Outset. Each one links to the evidence behind it.

How does StrataDB know a company uses Hertza L.L.C and Slack?

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 Hertza L.L.C and Slack

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