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Technologies / Mailgun / Persona Identities

Companies using Mailgun and Persona Identities

4 companies in our data have public evidence for both Mailgun and Persona Identities, and 4 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
1%of Mailgun users
36%of Persona Identities users
4name 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

CompanyMailgunPersona Identities
Certainty Enginecertaintyengine.ioCertainty Engine is an all-in-one software system that combines lead tracking, follow-up, reviews, communication, and AI tools.AI and machine learningMarketing
HighLevelgohighlevel.comHighLevel is an AI-powered business operating system that provides tools to capture, nurture, and close leads into bookings, sales, reviews, and repeat customers.Marketing
Kalingokalingo.huKalingo provides an all-in-one marketing platform that combines funnels, CRM, email/SMS, booking, and AI agents.Marketing
ShipBobshipbob.comShipBob is an end-to-end fulfillment provider that handles inventory distribution, order picking, packing, shipping, and returns for ecommerce brands.E-commerceLogistics and supply chain

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 489 companies we see using Mailgun also show the other.

All 489 companies using Mailgun433 name it as a subprocessorMore in Email and communications

Persona Identities

Security and identity

36% of the 11 companies we see using Persona Identities also show the other.

All 11 companies using Persona Identities8 name it as a subprocessorMore in Security and identity

Other pairs

Companies with their own evidence for both.

More with Mailgun

Cloudflare489companiesAmazon Web Services351companiesGoogle Workspace340companiesGoogle Tag Manager269companiesStripe248companiesOpenAI243companies

More with Persona Identities

Cloudflare11companiesAmazon Web Services8companiesStripe8companiesGoogle Workspace7companiesTwilio6companiesGoogle5companies

Questions

How many companies use both Mailgun and Persona Identities?

4 companies in StrataDB's data have public evidence for both, and 4 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 Persona Identities?

Certainty Engine, HighLevel, Kalingo and ShipBob. Each one links to the evidence behind it.

How does StrataDB know a company uses Mailgun and Persona Identities?

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 Persona Identities

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