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Technologies / Mailgun / Message Systems

Companies using Mailgun and Message Systems

3 companies in our data have public evidence for both Mailgun and Message Systems, 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
100%of Message Systems 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

CompanyMailgunMessage Systems
Blueshiftblueshift.comBlueshift is an AI-powered Customer Engagement Platform that unifies customer data and automates personalized campaigns across email, SMS, push, paid media, and other channels.Marketing
Intercomintercom.comIntercom provides an AI-powered helpdesk and a natively integrated AI agent called Fin for customer service.Customer support
Rackspacerackspace.comRackspace operates enterprise AI infrastructure, including governed private cloud and AI workloads in production, along with cloud consulting, migration, and managed operations services.AI and machine learningCloud and infrastructure

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 487 companies we see using Mailgun also show the other.

All 487 companies using Mailgun432 name it as a subprocessorMore in Email and communications

Message Systems

Email and communications

Message is a unified customer conversation platform that brings chat, email tickets, phone calls and connected messaging channels into one shared Inbox. It is used by teams to handle customer support, with customer context shown beside each conversation so that another agent can pick it up.

Summarized from message.com on 8 Nov 2026.

100% of the 3 companies we see using Message Systems also show the other.

All 3 companies using Message SystemsMore in Email and communications

Other pairs

Companies with their own evidence for both.

More with Mailgun

Cloudflare488companiesAmazon Web Services350companiesGoogle Workspace339companiesGoogle Tag Manager268companiesStripe248companiesOpenAI242companies

Questions

How many companies use both Mailgun and Message Systems?

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 Message Systems?

Blueshift, Intercom and Rackspace. Each one links to the evidence behind it.

How does StrataDB know a company uses Mailgun and Message Systems?

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 Message Systems

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