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Technologies / Flowmailer / HubSpot

Companies using Flowmailer and HubSpot

3 companies in our data have public evidence for both Flowmailer and HubSpot, 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.

3companies use both
50%of Flowmailer users
under 1%of HubSpot 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

CompanyFlowmailerHubSpot
Exactexact.comExact provides cloud-based business software, including finance and ERP software, for small and medium-sized businesses and their accountants.Finance and accounting software
Yukiyukisoftware.com
Adversusadversus.ioAdversus provides outbound sales software for dialing, lead management, workflow automation, and performance tracking.Sales

The two technologies

Flowmailer

Email and communications

Flowmailer is a platform for transactional communication. It is used to professionalise transactional email flows with features such as templates, bounce management, open and click tracking, and delivery via SMTP or API.

Summarized from flowmailer.com on 8 Nov 2026.

50% of the 6 companies we see using Flowmailer also show the other.

All 6 companies using Flowmailer6 name it as a subprocessorMore in Email and communications

HubSpot

CRM and sales

HubSpot is a customer platform that brings together marketing, sales, and customer service software on one agentic platform. It is used for marketing automation, sales, customer service, content marketing, data management, and billing and payments.

Summarized from hubspot.com on 8 Nov 2026.

under 1% of the 4,303 companies we see using HubSpot also show the other.

All 4,303 companies using HubSpot1,145 name it as a subprocessorMore in CRM and sales

Other pairs

Companies with their own evidence for both.

More with Flowmailer

Cloudflare6companies

More with HubSpot

Cloudflare4,232companiesGoogle Workspace3,081companiesGoogle Tag Manager2,826companiesGoogle Analytics1,945companiesAmazon Web Services1,709companiesWebflow1,162companies

Questions

How many companies use both Flowmailer and HubSpot?

3 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 Flowmailer and HubSpot?

Exact, Yuki and Adversus. Each one links to the evidence behind it.

How does StrataDB know a company uses Flowmailer and HubSpot?

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 Flowmailer and HubSpot

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