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Technologies / Mailgun / SupportNinja

Companies using Mailgun and SupportNinja

3 companies in our data have public evidence for both Mailgun and SupportNinja, 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.

3companies use both
1%of Mailgun users
50%of SupportNinja 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

CompanyMailgunSupportNinja
Axios HQaxioshq.comAxios HQ is an internal communications software platform that helps teams plan, write, send, and measure updates.CommunicationsProductivity and collaboration
Checkrcheckr.comCheckr provides an AI-powered verification platform for background checks and identity verification.Compliance and riskHR and recruiting
Cventcvent.comCvent provides a platform for planning, running, and measuring events, along with tools for hospitality professionals to manage group business.Marketing

The two technologies

Mailgun

by Sinch · Email and communications

Mailgun is a transactional email delivery service and API that developers use to send, receive, track, and validate emails. It also offers tools for optimizing email deliverability and previewing emails before they are sent.

Summarized from mailgun.com on 8 Nov 2026.

1% of the 490 companies we see using Mailgun also show the other.

All 490 companies using Mailgun434 name it as a subprocessorMore in Email and communications

SupportNinja

Support and chat

SupportNinja is a provider of technology-enabled customer experience (CX) solutions that combines a human-in-the-loop approach with hands-on execution and strategic advising. It is used to transform and scale CX operations, including customer conversion, onboarding, support, technical support, renewals, content moderation, data operations, finance and accounting, and AI data enablement.

Summarized from supportninja.com on 8 Nov 2026.

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

All 6 companies using SupportNinja6 name it as a subprocessorMore in Support and chat

Other pairs

Companies with their own evidence for both.

More with Mailgun

Cloudflare488companiesAmazon Web Services350companiesGoogle Workspace339companiesGoogle Tag Manager268companiesStripe248companiesOpenAI242companies

More with SupportNinja

Cloudflare6companiesAmazon Web Services5companies

Questions

How many companies use both Mailgun and SupportNinja?

3 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 Mailgun and SupportNinja?

Axios HQ, Checkr and Cvent. Each one links to the evidence behind it.

How does StrataDB know a company uses Mailgun and SupportNinja?

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 Mailgun and SupportNinja

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
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